title: 1996 Mount Everest disaster

text: Later in the day, however, Weathers regained consciousness and walked alone under his own power to the camp, surprising everyone there, though he was still suffering severe hypothermia and frostbite. Despite receiving oxygen and attempts to rewarm him, Weathers was practically abandoned again the next morning, 12 May, after a storm had collapsed his tent overnight and the other survivors once again thought he had died. Krakauer discovered he was still conscious when the survivors in Camp IV prepared to evacuate. Despite his worsening condition, Weathers found he could still move mostly under his own power. A rescue team mobilized, hopeful of getting Weathers down the mountain alive. Over the next two days, Weathers was ushered down to Camp II with the assistance of eight healthy climbers from various expeditions, and was evacuated by a daring high-altitude helicopter rescue. He survived and eventually recovered, but lost his nose, right hand, half his right forearm, and all the fingers on his left hand to frostbite.


title: 1996 Mount Everest disaster

text: The climbing Sherpas located Fischer and Gau on 11 May, but Fischer's condition had deteriorated so much that they were only able to give palliative care before rescuing Gau. Boukreev made a subsequent rescue attempt but found Fischer's frozen body at around 19:00. Like Weathers, Gau was evacuated by helicopter.


title: 1996 Mount Everest disaster

text: Jon Krakauer has suggested that the use of bottled oxygen and commercial guides, who personally accompanied and took care of all pathmaking, equipment, and important decisions, allowed otherwise unqualified climbers to attempt to summit, thereby leading to dangerous situations and more deaths. In addition, he wrote that the competition between Hall and Fischer's guiding companies may have led to Hall's decision not to turn back on 10 May after the summiting deadline of 14:00; Krakauer also acknowledges that his own presence as a journalist for an important mountaineering magazine may have added pressure to guide clients to the summit despite the growing dangers. He proposed banning bottled oxygen except for emergency cases, arguing that this would both decrease the growing litter on Everest—many discarded bottles have accumulated on its slopes—and keep marginally qualified climbers off the mountain. He does point out, however, that climbing Everest has always been a highly dangerous endeavour, even before the guided tours, with one fatality for every four climbers who reach the summit. Furthermore, he notes that many of the poor decisions made on 10 May came after two or more days of inadequate oxygen, nourishment, and rest (due to the effects of entering the death zone above ).


title: 1996 Mount Everest disaster

text: Krakauer also elaborated on the statistical curiosities of fatality rates on Everest and how the 1996 season was "business as usual". The record number of 12 fatalities in the 1996 spring climbing season was 3% of the 398 climbers who had ascended above Base Camp—slightly below the historical average of 3.3% at that time. Additionally, a total of 84 climbers reached the summit that season, giving a fatality-to-summit ratio of 1 in 7—significantly less than the historical average of 1 in 4 prior to 1996. Accounting for the increased volume of climbers in 1996 compared with previous years, the fatality rates on Everest dropped considerably, meaning that 1996 was statistically a "safer"-than-average year.


title: 1996 Mount Everest disaster

text: In May 2004, Kent Moore, a physicist, and John L. Semple, a surgeon, both researchers from the University of Toronto, told "New Scientist" magazine that an analysis of the weather conditions on 11 May suggested that atmospheric oxygen levels fell by an additional 6% as a result of the storm, resulting in a further 14% reduction in oxygen uptake.


title: 1996 Mount Everest disaster

text: Following the disaster, the use and non-use of supplementary oxygen was the focus of much discussion and analysis, with a guide and a sardar both criticized by Krakauer for not using supplementary oxygen while performing guide duties. Both men gave detailed written explanations as to why they preferred not to use oxygen; both carried a bottle on the summit day that could be used if needed in an emergency or extraordinary situation. In his book "The Climb", Boukreev shared this explanation with Mark Bryant, the editor of "Outside" magazine:


title: 1996 Mount Everest disaster

text: There were several issues and problems with radios and their use on summit day. Scott Fischer's "sardar" did not have a company-issued radio, but did have a "small yellow" radio that was owned by Sandy Pittman. Rob Hall's team also had an issue with a radio during a discussion over oxygen bottles that caused confusion.


title: 1996 Mount Everest disaster

text: The following is a list of the other fatalities during the spring 1996 climbing season on Everest. These deaths were not directly related to the storm or the events of 10–11 May 1996 Everest disaster.


title: 1996 Mount Everest disaster

text: In the epilogue to "High Exposure", David Breashears describes encountering some of the bodies upon climbing Everest again, in May 1997.


title: Kent

text: Kent is a county in South East England and one of the home counties. It borders Greater London to the north-west, Surrey to the west and East Sussex to the south-west, and Essex to the north across the estuary of the River Thames; it faces the French department of Pas-de-Calais across the Strait of Dover. The county town is Maidstone. It is the fifth most populous county in England, the most populous non-Metropolitan county and the most populous of the home counties.


title: Kent

text: Kent was one of the first British territories to be settled by Germanic tribes, most notably the Jutes, following the withdrawal of the Romans. Canterbury Cathedral in Kent, the oldest cathedral in England, has been the seat of the Archbishops of Canterbury since the conversion of England to Christianity that began in the 6th century with Saint Augustine. Rochester Cathedral in Medway is England's second-oldest cathedral. Located between London and the Strait of Dover, which separates England from mainland Europe, Kent has been the setting for both conflict and diplomacy, including the Battle of Britain in World War II and the Leeds Castle peace talks of 1978 and 2004.


title: Kent

text: England relied on the county's ports to provide warships through much of its history; the Cinque Ports in the 10th–14th centuries and Chatham Dockyard in the 16th–20th centuries were of particular importance. France can be seen clearly in fine weather from Folkestone and the White Cliffs of Dover. Hills in the form of the North Downs and the Greensand Ridge span the length of the county and in the Vale of Holmesdale in between and to the south are most of the county's .


title: Kent

text: Kent's economy is diversified: agriculture, haulage, logistics and tourism are various industries. Because of its orchards and allotments, Kent is known as "The Garden of England". In northwest Kent, industries include extraction of aggregate building materials, printing and scientific research. Coal mining has also played its part in Kent's industrial heritage. Large parts of Kent are within the London commuter belt and its strong transport connections to the capital and the nearby continent make Kent a high-income county. Twenty-eight per cent of the county forms part of two Areas of Outstanding Natural Beauty: the North Downs and The High Weald.


title: Kent

text: The name "Kent" is believed to be of British Celtic origin. The meaning has been explained as 'coastal district,' 'corner-land' or 'land on the edge' (compare Welsh "cant" 'bordering of a circle, tire, edge;' Breton "cant" 'circle;' Dutch "kant" 'side, edge'). In Latin sources the area is called "Cantia" or "Cantium", while the Anglo-Saxons referred to it as "Cent", "Cent lond" or "Centrice".


title: Kent

text: The area has been occupied since the Palaeolithic era, as attested by finds from the quarries at Swanscombe. The Medway megaliths were built during the Neolithic era. There is a rich sequence of Bronze Age, celtic Iron Age, and Britto-Roman era occupation, as indicated by finds and features such as the Ringlemere gold cup and the Roman villas of the Darent valley.


title: Kent

text: Julius Caesar described the area as "Cantium", or the home of the Cantiaci, in 51 BC. The extreme west of the modern county was by the time of Roman Britain occupied by a celtic Iron Age tribe known as the Regni. Caesar wrote that the people of Kent were 'by far the most civilised inhabitants of Britain'.


title: Kent

text: Following the withdrawal of the Romans, large numbers of Germanic speakers from the continent settled in Kent, bringing their language, which came to be Old English. While they expelled the native Romano-British population, some likely remained in the area, eventually assimilating with the newcomers. Of the invading tribes, the Jutes were the most prominent, and the area became a Jutish kingdom recorded as "Cantia" in about 730 and "Cent" in 835. The early medieval inhabitants of the county were referred to as the "Cantwara", or Kentish people. The city of Canterbury was the largest in Kent.


title: Kent

text: In 597, Pope Gregory I appointed the religious missionary (who became Saint Augustine of Canterbury after his death) as the first Archbishop of Canterbury. In the previous year, Augustine successfully converted the pagan King Æthelberht of Kent to Christianity. The Diocese of Canterbury became England's first Episcopal See with first cathedral and has since remained England's centre of Christianity. The second designated English cathedral was for West Kent at Rochester Cathedral.


title: Kent

text: Kent was traditionally partitioned into East and West Kent, and into lathes and hundreds. The traditional border of East and West Kent was the county's main river, the Medway. Men and women from east of the Medway are Men (or Maids) of Kent, those from the west are Kentishmen or Kentish Maids. The divide has been explained by some as originating in the Anglo-Saxon migrations, with Jutes mainly settling east of the Medway and Saxons settling west of it.


title: Kent

text: In the 11th century, the people of Kent adopted the motto "Invicta", meaning "undefeated" or "unconquered". This naming followed the invasion of Britain by William of Normandy as he was unable to subdue the county and they negotiated favourable terms. The continued resistance of the Kentish people against the Normans led to Kent's designation as a semi-autonomous county palatine in 1067. Under the nominal rule of William's half-brother Odo of Bayeux, the county was granted similar powers to those granted in the areas bordering Wales and Scotland.


title: Kent

text: During the medieval and early modern period, Kent played a major role in several of England's most notable rebellions, including the Peasants' Revolt of 1381, led by Wat Tyler,


title: Kent

text: The Royal Navy first used the River Medway in 1547. By the reign of Elizabeth I (1558–1603) a small dockyard had been established at Chatham. By 1618, storehouses, a ropewalk, a drydock, and houses for officials had been built downstream from Chatham.


title: Kent

text: By the 17th century, tensions between Britain and the powers of the Netherlands and France led to increasing military build-up in the county. Forts were built all along the coast following the raid on the Medway, a successful attack by the Dutch navy on the shipyards of the Medway towns in 1667.


title: Kent

text: The 18th century was dominated by wars with France, during which the Medway became the primary base for a fleet that could act along the Dutch and French coasts. When the theatre of operation moved to the Atlantic, this role was assumed by Portsmouth and Plymouth, with Chatham concentrating on shipbuilding and ship repair. As an indication of the area's military importance, the first Ordnance Survey map ever drawn was a one-inch map of Kent, published in 1801. Many of the Georgian naval buildings still stand.


title: Kent

text: In the early 19th century, smugglers were very active on the Kent coastline. Gangs such as The Aldington Gang brought spirits, tobacco and salt to the county, and transported goods such as wool across the sea to France.


title: Kent

text: In 1889, the County of London was created and took over responsibility for local administration of parts of north-west Kent. These included the towns of Greenwich, Woolwich, Lee, Eltham, Charlton, Kidbrooke. In 1900, however, Kent absorbed the district of Penge. Some of Kent is contiguous with the Greater London sprawl, notably parts of Dartford.


title: Kent

text: Originally, the border between Kent and Sussex (later East Sussex) ran through the towns of Tunbridge Wells and Lamberhurst. In 1894, by the Local Government Act, the parts of these towns that lay in East Sussex were absorbed by Kent.


title: Kent

text: Between June 1944 and March 1945, more than 10,000 V1 flying bombs, or "Doodlebugs", were fired towards London from bases in Northern France. Although many were destroyed by aircraft, anti-aircraft guns and barrage balloons, both London and Kent were hit by around 2,500 of these bombs.


title: Kent

text: After the war, Kent's borders changed several more times. In 1965, the London boroughs of Bromley and Bexley were created from nine towns formerly in Kent. In 1998, Rochester, Chatham, Gillingham and Rainham left the administrative county of Kent to form the Unitary Authority of Medway. Plans for another unitary authority in north-west Kent were dropped, but in 2016 consultations began between five Kent local authorities (Canterbury, Thanet, Dover, Folkestone & Hythe, and Ashford) with a view to forming a new unitary authority for East Kent, outside the auspices of Kent County Council.


title: Kent

text: For almost nine centuries, a small part of present-day East London (the North Woolwich, London E16 area), formed part of Kent.


title: Kent

text: Kent is in the southeastern corner of England. It borders the Thames Estuary and the North Sea to the north, and the Straits of Dover and the English Channel to the south. France is across the Strait.


title: Kent

text: The major geographical features of the county are based on a series of ridges and valleys running east–west across the county. These are the results of erosion of the Wealden dome, a dome across Kent and Sussex created by alpine movements 20–10 million years ago. This dome consists of an upper layer of chalk above successive layers of Upper Greensand, Gault Clay, Lower Greensand, Weald Clay, and Wealden sandstone. The ridges and valleys formed when the exposed clay eroded faster than the exposed chalk, greensand, or sandstone.


title: Kent

text: Sevenoaks, Maidstone, Ashford, and Folkestone are built on greensand, while Tonbridge and Tunbridge Wells are built on sandstone. Dartford, Gravesend, the Medway towns, Sittingbourne, Faversham, Canterbury, Deal, and Dover are built on chalk. The easterly section of the Wealden dome has been eroded away by the sea, and cliffs such as the White Cliffs of Dover are present where a chalk ridge known as the North Downs meets the coast. Spanning Dover and Westerham is the Kent Downs Area of Outstanding Natural Beauty.


title: Kent

text: The Wealden dome is a Mesozoic structure lying on a Palaeozoic foundation, which can often create the right conditions for coal formation. This is found in East Kent roughly between Deal, Canterbury, and Dover. The Coal Measures within the Westphalian Sandstone are about deep, and are subject to flooding. They occur in two major troughs, which extend under the English Channel.


title: Kent

text: Seismic activity has occasionally been recorded in Kent, though the epicentres were offshore. In 1382 and 1580 there were two earthquakes exceeding 6.0 on the Richter Scale. In 1776, 1950, and on 28 April 2007 there were earthquakes of around 4.3. The 2007 earthquake caused physical damage in Folkestone. A further quake on 22 May 2015 measured 4.2 on the Richter Scale. It was centred in the Sandwich area of east Kent at about ten miles below the surface. There was little if any damage reported.


title: Kent

text: The coastline of Kent is continuously changing, due to tectonic uplift and coastal erosion. Until about 960, the Isle of Thanet was an island, separated by the Wantsum channel, formed around a deposit of chalk; over time, the channels silted up with alluvium. Similarly Romney Marsh and Dungeness have been formed by accumulation of alluvium.


title: Kent

text: Kent's principal river, the River Medway, rises near East Grinstead in Sussex and flows eastwards to Maidstone. Here it turns north and breaks through the North Downs at Rochester, then joins the estuary of the River Thames near Sheerness. The Medway is some long. The river is tidal as far as Allington lock, but in earlier times, cargo-carrying vessels reached as far upstream as Tonbridge. The Medway has captured the head waters of other rivers such as the River Darent. Other rivers of Kent include the River Stour in the east.


title: Kent

text: A 2014 study found that Kent shares significant reserves of shale oil with other neighbouring counties, totalling 4.4 billion barrels of oil, which then Business and Energy Minister Michael Fallon said "will bring jobs and business opportunities" and significantly help with UK energy self-sufficiency. Fracking in the area is required to achieve these objectives; it has been opposed by environmental groups.


title: Kent

text: Kent is one of the warmest parts of Britain. On 10 August 2003, in the hamlet of Brogdale near Faversham the temperature reached , at that time the highest temperature ever officially recorded in the United Kingdom.


title: Kent

text: Kent County Council (KCC) and its 12 district councils administer most of the county (3352 km), while the Medway Towns Council, a unitary authority and commonly called Medway Council, administers the more densely populated remainder (192 km). Together they have around 300 town and parish councils. Kent County Council's headquarters are in Maidstone, while Medway's offices are at Gun Wharf, Chatham.


title: Kent

text: At the 2013 county council elections, control of Kent County Council was held by the Conservatives, who won 44 of the council's 83 seats. 17 seats were won by the United Kingdom Independence Party, 13 by the Labour Party, 7 by the Liberal Democrats, 1 by the Green Party and 1 by the Swanscombe and Greenhithe Residents Association. At the 2007 local elections, control of Medway Council was held by the Conservatives; 33 of the council's 55 seats were held by the Conservatives, 13 by the Labour Party, 8 by the Liberal Democrats and 1 by an Independent. All but one of Kent's district councils are controlled by the Conservatives: a minority Labour administration took control of Thanet District in December 2011 after a Conservative councillor defected to the Independent group. In the council elections of May 2015 the United Kingdom Independence Party (UKIP) took control of the Council, the first and so far only one in the UK. In October 2015 UKIP lost overall control following a series of resignations, although remaining the largest party, only for UKIP to regain control once more following ward elections in August 2016.


title: Kent

text: At the national level, Kent is represented in Parliament by 17 MPs, all of whom are Conservative except Rosie Duffield, Labour MP for Canterbury since 2017.


title: Kent

text: At the 2011 census, Kent, including Medway, had 1,727,665 residents (18.0% of which in Medway); had 711,847 households (17.5% of which in Medway) and had 743,436 dwellings (14.8% of which in Medway). 51.1% of Kent's population excluding Medway was female — as to Medway, this proportion was 50.4%.


title: Kent

text: The tables below provide statistics for the administrative county of Kent, that is, excluding Medway.


title: Kent

text: At the 2001 UK census, employment statistics for the residents in Kent, including Medway, were as follows: 41.1% in full-time employment, 12.4% in part-time employment, 9.1% self-employed, 2.9% unemployed, 2.3% students with jobs, 3.7% students without jobs, 12.3% retired, 7.3% looking after home or family, 4.3% permanently sick or disabled, and 2.7% economically inactive for other reasons. Of residents aged 16–74, 16% had a higher education qualification or the equivalent, compared to 20% nationwide.


title: Kent

text: The average hours worked per week by residents of Kent were 43.1 for males and 30.9 for females. Their industry of employment was 17.3% retail, 12.4% manufacturing, 11.8% real estate, 10.3% health and social work, 8.9% construction, 8.2% transport and communications, 7.9% education, 6.0% public administration and defence, 5.6% finance, 4.8% other community and personal service activities, 4.1% hotels and restaurants, 1.6% agriculture, 0.8% energy and water supply, 0.2% mining, and 0.1% private households. This is higher than the whole of England for construction and transport/communications and lower for manufacturing.


title: Kent

text: Kent is sometimes known as the "Garden of England" for its abundance of orchards and hop gardens. In particular the county produces tree-grown fruits, strawberries and hazelnuts. Distinctive hop-drying buildings called oasts are common in the countryside, although many have been converted into dwellings. Nearer to London, market gardens also flourish. Kent is the main area for hazelnut production in the UK.


title: Kent

text: However, in recent years, there has been a significant drop in agriculture, and industry and services are increasing their utilisation of the area. This is illustrated by the following table of economic indicator gross value added (GVA) between 1995 and 2003 (figures are in £ millions):


title: Kent

text: North Kent is heavily industrialised, with cement-making at Northfleet and Cuxton, brickmaking at Sittingbourne, shipbuilding on the Medway and Swale, engineering and aircraft design and construction at Rochester, chemicals at Dartford, papermaking at Swanley, and oil refining at Grain. There is a steel mini mill in Sheerness and a rolling mill in Queenborough. There are two nuclear power stations at Dungeness, although the older one, Dungeness A, built in 1965, was decommissioned in 2006.


title: Kent

text: Cement-making, papermaking, and coal-mining were important industries in Kent during the 19th and 20th centuries. Cement came to the fore in the 19th century when massive building projects were undertaken. The ready supply of chalk and huge pits between Stone and Gravesend bear testament to that industry. There were also other workings around Burham on the tidal Medway. Chalk, gravel and clay were excavated on Dartford Heath for centuries.


title: Kent

text: Kent's original paper mills stood on streams like the River Darent, tributaries of the River Medway, and on the River Stour. Two 18th century mills were on the River Len and at Tovil on the River Loose. In the late 19th century huge modern mills were built at Dartford and Northfleet on the River Thames and at Kemsley on The Swale. In pre-industrial times, almost every village and town had its own windmill or watermill, with over 400 windmills known to have stood at some time. Twenty-eight survive within the county today, plus two replica mills and a further two in that part of Kent now absorbed into London. All the major rivers in the county were used to power watermills.


title: Kent

text: From about 1900, several coal pits operated in East Kent. The Kent Coalfield was mined during the 20th century at several collieries, including Chislet, Tilmanstone, Betteshanger, and the Snowdown Colliery, which ran from 1908 to 1986.


title: Kent

text: The west of the county (including Tunbridge Wells, Tonbridge, and Sevenoaks) has less than 50% of the average claimant count for low incomes or worklessness as the coastal districts of Dover, Folkestone and Hythe, and Thanet (chiefly three resorts: Ramsgate, Broadstairs, and Margate). West and Central Kent have long had many City of London commuters.


title: Kent

text: Kent's geographical location between the Straits of Dover and London has influenced its architecture, as has its Cretaceous geology and its good farming land and fine building clays. Kent's countryside pattern was determined by a gavelkind inheritance system that generated a proliferation of small settlements. There was no open-field system, and the large tracts were owned by the two great abbeys, Christ Church, Canterbury and St Augustine's Abbey, that did not pass into the hands of the king during the Reformation. Canterbury Cathedral is the United Kingdom's metropolitan cathedral; it was founded in AD 598 and displays architecture from all periods. There are nine Anglo-Saxon churches in Kent. Rochester Cathedral is England's second-oldest cathedral, the present building built in the Early English Style. These two dioceses ensured that every village had a parish church.


title: Kent

text: The sites of Richborough Castle and Dover Castle, along with two strategic sites along Watling Street, were fortified by the Romans and the Dukes of Kent. Other important sites include Canterbury city walls and Rochester Castle. There remained a need to defend London and thus Kent. Deal Castle, Walmer Castle, Sandown Castle (whose remains were eroded by the sea in the 1990s) were constructed in late mediaeval times, and HM Dockyard, at Chatham and its surrounding castles and forts—Upnor Castle, Great Lines, and Fort Amherst—more recently.


title: Kent

text: Kent has three unique vernacular architecture forms: the oast house, the Wealden hall house, and Kentish peg-tiles.


title: Kent

text: Kent has bridge trusts to maintain its bridges, and though the great bridge (1387) at Rochester was replaced there are medieval structures at Aylesford, Yalding and Teston. With the motorways in the late twentieth century came the M2 motorway bridge spanning the Medway and the Dartford tunnel and the Dartford Bridge spanning the Thames.


title: Kent

text: Kent has provided inspiration for several notable writers and artists. Canterbury's religious role gave rise to Chaucer's "Canterbury Tales", a key development in the English language. The father of novelist Charles Dickens worked at the Chatham Dockyard; in many of his books, the celebrated novelist featured the scenery of Chatham, Rochester, and the Cliffe marshes. During the late 1930s, Nobel Prize-awarded novelist William Golding worked as a teacher at Maidstone Grammar School, where he met his future wife Ann Brookfield. William Caxton, who first introduced the printing press to England, was born in Kent; the recent invention was key in helping many Kent dialect words and spellings to become standard in English. Lord Northbourne hosted a biodynamic agriculture conference on his estate at Betteshanger in the summer of 1939, he coined the term 'organic farming' and published his manifesto of organic agriculture the following year spawning a global movement for sustainable agriculture and food.


title: Kent

text: A number of significant artists came from Kent, including Thomas Sidney Cooper, a painter of landscapes, often incorporating farm animals, Richard Dadd, a maker of faery paintings, and Mary Tourtel, the creator of the children's book character, Rupert Bear. The artist Clive Head was also born in Kent. The landscape painter J. M. W. Turner spent part of his childhood in the town of Margate in East Kent, and regularly returned to visit it throughout his life. The East Kent coast inspired many of his works, including some of his most famous seascapes. Kent has also been the home to artists including Frank Auerbach, Tracey Emin and Stass Paraskos.


title: Kent

text: Kent was also the location of the largest number of art schools in the country during the nineteenth century, estimated by the art historian David Haste, to approach two hundred. This is believed to be the result of Kent being a front line county during the Napoleonic Wars. At this time, before the invention of photography, draughtsmen were used to draw maps and topographical representations of the fields of battle, and after the wars ended many of these settled permanently in the county in which they had been based. Once the idea of art schools had been established, even in small towns in Kent, the tradition continued, although most of the schools were very small one-man operations, each teaching a small number of daughters of the upper classes how to draw and make watercolour paintings. Nonetheless, some of these small art schools developed into much larger organisations, including Canterbury College of Art, founded by Thomas Sidney Cooper in 1868, which is today the University for the Creative Arts.


title: Kent

text: Blean near Canterbury was home to Smallfilms, the production company founded by Oliver Postgate and Peter Firmin and responsible for children's TV favourites Noggin the Nog, Ivor the Engine and Bagpuss.


title: Kent

text: Music festivals that take place in Kent include Chilled in a Field Festival, Electric Gardens, Hop Farm Festival, In the Woods Festival, Lounge On The Farm and the annual Smugglers Festival near Deal. Other venues for live music include Leas Cliff Hall in Folkestone and the Assembly Hall in Tunbridge Wells.


title: Kent

text: Kentish people have long viewed themselves as Kentish first and British second, and to this day refer to themselves as either 'Men of Kent' or 'Kentish men' depending on whether they live to the East or West of the River Medway. After the 2016 Brexit referendum and subsequent proposals for "border checks" on the Kentish border, effectively making Kent a country within a country, this pride in being Kentish began to form into calls from some areas for an independent Kent or an autonomous republic within the UK, especially from the county's prominent newspapers, with the idea being discussed in detail in some areas - with some ideas such as mock passports and "tongue-in-cheek" manifestos being created. These calls for independence can be explained by the individualistic and rebellious mentality that has always existed in the county, which can be explained by the counties position in the very South-East of the United Kingdom, having been a prominent and independent kingdom for centuries as well as being the source of many major rebellions that have occurred in the United Kingdom.


title: Kent

text: With the Roman invasion, a road network was constructed to connect London to the Channel ports of Dover, Lympne and Richborough. The London–Dover road was Watling Street. These roads are now approximately the A2, B2068, A257, and the A28. The A2 runs through Dartford (A207), Gravesend, Rochester, Canterbury, and Dover; the A20 through Eltham, Wrotham, Maidstone, Charing, Ashford. Hythe, Folkestone and Dover; the A21 around Sevenoaks, Tonbridge, Tunbridge Wells and on to Hastings in East Sussex. In the 1960s, two motorways were built; the M2 from Medway to Faversham, and the M20 from Swanley to Folkestone. Part of the M25 runs through Kent, from Westerham to the Dartford Crossing. The M26 motorway, built in 1980, provides a short link between the M25 at Sevenoaks and the M20 near Wrotham. Kent currently has more motorways by distance than any other county in the UK, with sections of the M2, M20, M25 and M26 totalling within the extents of the ceremonial county.


title: Kent

text: In the run-up to Britain leaving the European Union, Government minister Michael Gove confirmed that the Government intended to impose a "de facto" border between Kent and the rest of England for freight lorries, in order to deal with expected lorry queues of 7,000 or more at Folkestone, Dover and other ports. Heavy goods vehicle operators need to apply for a 24-hour Kent Access Permit (KAP) to take a vehicle of 7.5 tonnes or more into Kent if their intention is to cross to the EU via Dover or the Eurotunnel.


title: Kent

text: The medieval Cinque Ports, except for the Port of Dover, have all now silted up. The Medway Estuary has been an important port and naval base for 500 years. The River Medway is tidal up to Allington and navigable up to Tonbridge. Kent's two canals are the Royal Military Canal between Hythe and Rye, which still exists, and the Thames and Medway Canal between Strood and Gravesend. Built-in 1824, it was purchased in 1846 by the railways, which partially backfilled it. Container ports are at Ramsgate and Thamesport. Following the closures across the lower Medway, and the Swale to the Isle of Sheppey, during the 20th century, the Woolwich Ferry is the only domestic ferry that runs in the broadest definition of the county.


title: Kent

text: The earliest locomotive-driven passenger-carrying railway in Britain was the Canterbury & Whitstable Railway which opened in 1830. This and the London & Greenwich Railway later merged into South Eastern Railway (SER).


title: Kent

text: By the 1850s, SER's networks had expanded to Ashford, Ramsgate, Canterbury, Tunbridge Wells, and the Medway towns. SER's major London termini were London Bridge, Charing Cross, and Cannon Street. Kent also had a second major railway, the London, Chatham & Dover Railway. Originally the East Kent Railway in 1858, it linked the northeast Kent coast with London terminals at Victoria and Blackfriars.


title: Kent

text: The two companies merged in 1899, forming the South Eastern & Chatham Railway, further amalgamated with other railways by the Railways Act 1921 to form the Southern Railway. Britain's railways were nationalised in 1948, forming British Railways. The railways were privatised in 1996 and most Kent passenger services were franchised to Connex South Eastern. Following financial difficulties, Connex lost the franchise and was replaced by South Eastern Trains and after Southeastern.


title: Kent

text: The Channel Tunnel was completed in 1994 and High Speed 1 in November 2007 with a London terminus at St Pancras. A new station, Ebbsfleet International, opened between Dartford and Gravesend, serving northern Kent. The high speed lines will be utilised to provide a faster train service to coastal towns like Ramsgate and Folkestone. This station is in addition to the existing station at Ashford International, which has suffered a massive cut in service as a result.


title: Kent

text: In addition to the "main line" railways, there are several light, heritage, and industrial railways in Kent. There are three heritage, standard gauge railways; Spa Valley Railway near Tunbridge Wells on the old Tunbridge Wells West branch, East Kent Railway on the old East Kent coalfield area and the Kent & East Sussex Railway on the Weald around Tenterden. In addition, there is the gauge, Romney, Hythe & Dymchurch Railway on the southeast Kent coast along the Dungeness peninsula. Finally, there is the , industrial Sittingbourne & Kemsley Light Railway, previously the Bowaters Paper Railway.


title: Kent

text: In 2002, it was revealed that the government was considering building a new four-runway airport on the marshland near the village of Cliffe on Hoo Peninsula. This plan was dropped in 2003 following protests by cultural and environmental groups. However further plans for a Thames Estuary Airport on the Kent coast have subsequently emerged, including the Thames Hub Airport, again sited on the Isle of Grain and designed by Lord Foster, and the London Britannia Airport plan, colloquially known as "Boris Island" due to its being championed by the former Mayor of London Boris Johnson, which would see a six runway airport built on an artificial island to be towards the Shivering Sands area, north-east of Whitstable.


title: Kent

text: Both of these options were dropped in 2014 in favour of expansion at either Gatwick or Heathrow Airport, the latter finally being the chosen option following Theresa May's installation as Prime Minister in summer 2016.


title: Kent

text: Manston Airport, located near the village of Manston in the Thanet district, was a former RAF facility that also handled some civilian flights. It closed in 2014.


title: Kent

text: Kent has four universities: Canterbury Christ Church University with campuses throughout East Kent; University of Kent, with campuses in Canterbury and Medway; University of Greenwich (a London University), with sites at Woolwich, Eltham, London and Medway; the University for the Creative Arts (UCA) also has three of its five campuses in the county.


title: Kent

text: Although much of Britain adopted a comprehensive education system in the 1970s, Kent County Council (KCC) and Medway Unitary Authority are among around fifteen


title: Kent

text: local authorities still providing wholly selective education through the eleven-plus examination with students allocated a place at a secondary modern school or at a grammar school.


title: Kent

text: In 2005–06, Kent County Council and Medway introduced a standardised school year, based on six terms, as recommended by the Local Government Association in its 2000 report, "The Rhythms of Schooling".


title: Kent

text: Kent County Council Local Education Authority maintains 96 secondary schools, of which 33 are selective schools and 63 are secondary modern schools.


title: Kent

text: Music education is provided by Kent Music (formerly Kent Music School), which has its origins in the 1940s. Kent Music provides services across the county including Kent County Youth Orchestra, Kent Youth Choirs, and an annual summer school at Benenden School.


title: Kent

text: In 2010, Kent had the highest number of National Challenge schools in England: schools which are branded 'failing' based on the British Government's floor targets that 30% of pupils achieve at least 5 GCSE grades A* to C. Of the 63 secondary modern schools, 33 missed this target; thus 52% of Kent secondary modern schools (34% out of all 96 maintained secondary schools) are 'failing'.


title: Kent

text: In association football, Kent's highest ranked football team is Gillingham FC (nicknamed 'The Gills') who play in Football League Two, having been demoted at the end of the 2021-22 season. Maidstone United was a Football League side from 1989 until going bankrupt in 1992. Kent clubs in the higher levels of non-league football include the current incarnation of Maidstone United and Dover Athletic playing in the National League along with Ebbsfleet United, who were promoted in 2017. Dartford currently play in National League South, the sixth tier of the English football pyramid.


title: Kent

text: Kent is represented in cricket by Kent County Cricket Club. The club was a founder member of the County Championship in 1890 and has won the competition, the major domestic first-class cricket competition, seven times. The club is based at the St Lawrence Ground in Canterbury and also plays matches at the Nevill Ground in Royal Tunbridge Wells and the County Cricket Ground, Beckenham. The Kent Women cricket team has won the Women's County Championship seven times since it was established in 1997. Cricket has traditionally been a popular sport in the county and Kent is considered one of the locations in which the game first developed. Teams have represented the county since the early 18th century. The Kent Cricket League is the top level of club competition within Kent and features teams from throughout the county, including areas such as Beckenham and Bexley which were formerly part of the county.


title: Kent

text: Canterbury Hockey Club and Holcombe Hockey Club both play in the top division in both the men's and women's England Hockey Leagues. Sevenoaks Hockey Club's women first XI plays in the second tier of national competition.


title: Kent

text: In rugby union, Tonbridge Juddians and Canterbury RFC play in the fourth-tier of English rugby in the National League 2 South. Gravesend RFC play in the seventh-tier London 2 South-East. Blackheath FC, a club within the historic boundaries of the county, play in fourth-tier National League 2 South. Both Tonbridge Juddians and Blackheath RFC played in National league 1 (the third-tier of English rugby) up until the end of the 2021-2022 season.


title: Kent

text: In motorsport, the Brands Hatch circuit near Swanley has played host to a number of national and international racing events and hosted 12 runnings of the British Grand Prix in various years between 1964 and 1986.


title: Kent

text: Kent is home to two National League netball clubs, both based in northwest Kent: Telstars (Premier Division 2) and KCNC (Premier Division 3).


title: Kent

text: The 2021-2022 season has seen three Kentish clubs demoted from the third-tier of their respective sports to the fourth-tier, with rugby clubs Tonbridge Juddians and Blackheath RFC being demoted in rugby and Gillingham FC being demoted in football.


title: Kent

text: Much of Kent is served by the BBC's South East region, which is based in Tunbridge Wells and provides local news for the county and East Sussex. Its commercial rival is ITV Meridian Ltd, which has a newsroom at The Maidstone Studios despite the main studio being based in Hampshire. Main transmitters providing these services are at West Hougham, near Dover and Blue Bell Hill, between Chatham and Maidstone. A powerful relay transmitter at Tunbridge Wells serves the town and surrounding area. Those parts of Kent closest to London such as Swanley, Westerham, Dartford, Gravesend, and Sevenoaks lie within the ITV London and BBC London areas, taking their television signals from the Crystal Palace transmitter.


title: Kent

text: Kent has two county-wide stations – BBC Radio Kent, based in Tunbridge Wells; and the commercial station KMFM, owned by the KM Group. KMFM previously consisted of seven local stations which covered different areas of the county (and are still technically seven different licences) but have shared all programming since 2012


title: Kent

text: The county's first commercial station was originally known as Invicta FM and began broadcasting in 1984. After various buyouts, the station was rebranded into Heart Kent in 2009 as part of the Heart Network. The station was closed and merged with several other Heart stations in the south of England in 2019 to form Heart South, with the Kent studios in Whitstable closing and production moving to Fareham in Hampshire.


title: Kent

text: The KM Group, KOS Media and Kent Regional News and Media all provide local newspapers for most of the large towns and cities. County-wide papers include the "Kent Messenger", "Kent on Saturday", "Kent on Sunday", and the "Kent and Sussex Courier".


title: Irritable bowel syndrome

text: Irritable bowel syndrome (IBS) is a "disorder of brain-gut interaction" characterized by a group of symptoms that commonly include abdominal pain and or abdominal bloating and changes in the consistency of bowel movements. These symptoms may occur over a long time, sometimes for years. IBS can negatively affect quality of life and may result in missed school or work (absenteeism) or reduced productivity at work (presenteeism). Disorders such as anxiety, major depression, and chronic fatigue syndrome are common among people with IBS.


title: Irritable bowel syndrome

text: The causes of IBS may well be multi-factorial. Theories include combinations of "gut–brain axis" problems, alterations in gut motility, visceral hypersensitivity, infections including small intestinal bacterial overgrowth, neurotransmitters, genetic factors, and food sensitivity. Onset may be triggered by an intestinal infection ("post-infectious irritable bowel syndrome") or a stressful life event.


title: Irritable bowel syndrome

text: Diagnosis is based on symptoms in the absence of worrisome features and once other potential conditions have been ruled out. Worrisome or "alarm" features include onset at greater than 50 years of age, weight loss, blood in the stool, or a family history of inflammatory bowel disease. Other conditions that may present similarly include celiac disease, microscopic colitis, inflammatory bowel disease, bile acid malabsorption, and colon cancer.


title: Irritable bowel syndrome

text: Treatment of IBS is carried out to improve symptoms and can be very effective. This may include dietary changes, medication, probiotics, and counseling. Dietary measures include increasing soluble fiber intake, or a diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAPs). The "low FODMAP" diet is meant for short to medium term use and is not intended as a life-long therapy. The medication loperamide may be used to help with diarrhea while laxatives may be used to help with constipation. There is strong clinical-trial evidence for the use of antidepressants, often in lower doses than that used for depression or anxiety, even in patients without comorbid mood disorder. Tricyclic antidepressants such as amitriptyline or nortriptyline and medications from the selective serotonin reuptake inhibitor (SSRI) group may improve overall symptoms and reduce pain. Patient education and a good doctor–patient relationship are an important part of care.


title: Irritable bowel syndrome

text: About 10–15% of people in the developed world are believed to be affected by IBS. The prevalence varies according to country (from 1.1% to 45.0%) and criteria used to define IBS; however pooling the results of multiple studies gives an estimate of 11.2%. It is more common in South America and less common in Southeast Asia. In the Western world it is twice as common in women as men and typically occurs before age 45. However, women in East Asia may not be more likely than men to have IBS, according to several studies. The condition appears to become less common with age. IBS does not affect life expectancy or lead to other serious diseases. The first description of the condition was in 1820, while the current term "irritable bowel syndrome" came into use in 1944.


title: Irritable bowel syndrome

text: IBS can be classified as diarrhea-predominant (IBS-D), constipation-predominant (IBS-C), with mixed/alternating stool pattern (IBS-M/IBS-A) or pain-predominant. In some individuals, IBS may have an acute onset and develop after an infectious illness characterized by two or more of: fever, vomiting, diarrhea, or positive stool culture. This post-infective syndrome has consequently been termed "post-infectious IBS" (IBS-PI).


title: Irritable bowel syndrome

text: The primary symptoms of IBS are abdominal pain or discomfort in association with frequent diarrhea or constipation and a change in bowel habits. Symptoms usually are experienced as acute attacks that subside within one day, but recurrent attacks are likely. There may also be urgency for bowel movements, a feeling of incomplete evacuation (tenesmus) or bloating. In some cases, the symptoms are relieved by bowel movements. People with IBS, more commonly than others, have gastroesophageal reflux, symptoms relating to the genitourinary system, fibromyalgia, headache, backache, and psychiatric symptoms such as depression and anxiety. About a third of adults who have IBS also report sexual dysfunction, typically in the form of a reduction in libido.


title: Irritable bowel syndrome

text: While the causes of IBS are still unknown, it is believed that the entire gut–brain axis is affected. Recent findings suggest that an allergy triggered peripheral immune mechanism may underlie the symptoms associated with abdominal pain in patients with irritable bowel syndrome. IBS is more prevalent in obese patients.


title: Irritable bowel syndrome

text: The risk of developing IBS increases six-fold after acute gastrointestinal infection. Post-infection, further risk factors are young age, prolonged fever, anxiety, and depression. Psychological factors, such as depression or anxiety, have not been shown to cause or influence the onset of IBS, but may play a role in the persistence and perceived severity of symptoms. Nevertheless, they may worsen IBS symptoms and quality of life. Antibiotic use also appears to increase the risk of developing IBS. Research has found that genetic defects in innate immunity and epithelial homeostasis increase the risk of developing both post-infectious as well as other forms of IBS.


title: Irritable bowel syndrome

text: Publications suggesting the role of the brain–gut axis appeared in the 1990s and childhood physical and psychological abuse is often associated with the development of IBS. It is believed that psychological stress may trigger IBS in predisposed individuals.


title: Irritable bowel syndrome

text: Given the high levels of anxiety experienced by people with IBS and the overlap with conditions such as fibromyalgia and chronic fatigue syndrome, a potential explanation for IBS involves a disruption of the stress system. The stress response in the body involves the hypothalamic–pituitary–adrenal axis (HPA) and the sympathetic nervous system, both of which have been shown to operate abnormally in people with IBS. Psychiatric illness or anxiety precedes IBS symptoms in two-thirds of people with IBS, and psychological traits predispose previously healthy people to developing IBS after gastroenteritis.


title: Irritable bowel syndrome

text: Approximately 10 percent of IBS cases are triggered by an acute gastroenteritis infection. The CdtB toxin is produced by bacteria causing gastroenteritis and the host may develop an autoimmunity when host antibodies to CdtB cross-react with vinculin. Genetic defects relating to the innate immune system and epithelial barrier as well as high stress and anxiety levels appear to increase the risk of developing post-infectious IBS. Post-infectious IBS usually manifests itself as the diarrhea-predominant subtype. Evidence has demonstrated that the release of high levels of proinflammatory cytokines during acute enteric infection causes increased gut permeability leading to translocation of the commensal bacteria across the epithelial barrier; this in turn can result in significant damage to local tissues, which can develop into chronic gut abnormalities in sensitive individuals. However, increased gut permeability is strongly associated with IBS regardless of whether IBS was initiated by an infection or not. A link between small intestinal bacterial overgrowth and tropical sprue has been proposed to be involved as a cause of post-infectious IBS.


title: Irritable bowel syndrome

text: Small intestinal bacterial overgrowth (SIBO) occurs with greater frequency in people who have been diagnosed with IBS compared to healthy controls. SIBO is most common in diarrhea-predominate IBS but also occurs in constipation-predominant IBS more frequently than healthy controls. Symptoms of SIBO include bloating, abdominal pain, diarrhea or constipation among others. IBS may be the result of the immune system interacting abnormally with gut microbiota resulting in an abnormal cytokine signalling profile.


title: Irritable bowel syndrome

text: Certain bacteria are found in lower or higher abundance when compared with healthy individuals. Generally Bacteroidota, Bacillota, and Pseudomonadota are increased and Actinomycetota, "Bifidobacteria", and "Lactobacillus" are decreased. Within the human gut, there are common phyla found. The most common is Bacillota. This includes "Lactobacillus", which is found to have a decrease in people with IBS, and "Streptococcus", which is shown to have an increase in abundance. Within this phylum, species in the class Clostridia are shown to have an increase, specifically "Ruminococcus" and "Dorea". The family Lachnospiraceae presents an increase in IBS-D patients. The second most common phylum is Bacteroidota. In people with IBS, the Bacteroidota phylum has been shown to have an overall decrease, but an increase in the genus "Bacteroides". IBS-D shows a decrease for the phylum Actinomycetota and an increase in Pseudomonadota, specifically in the family Enterobacteriaceae.


title: Irritable bowel syndrome

text: There is growing evidence that alterations of gut microbiota (dysbiosis) are associated with the intestinal manifestations of IBS, but also with the psychiatric morbidity that coexists in up to 80% of people with IBS. The role of the gut mycobiota, and especially of the abnormal proliferation of the yeast "Candida albicans" in some people with IBS, was under investigation as of 2005.


title: Irritable bowel syndrome

text: Protozoal infections can cause symptoms that mirror specific IBS subtypes, e.g., infection by certain substypes of "Blastocystis hominis" (blastocystosis). Many people regard these organisms as incidental findings, and unrelated to symptoms of IBS.


title: Irritable bowel syndrome

text: As of 2017, evidence indicates that blastocystis colonisation occurs more commonly in IBS affected individuals and is a possible risk factor for developing IBS. "Dientamoeba fragilis" has also been considered a possible organism to study, though it is also found in people without IBS.


title: Irritable bowel syndrome

text: Vitamin D deficiency is more common in individuals affected by irritable bowel syndrome. Vitamin D is involved in regulating triggers for IBS including the gut microbiome, inflammatory processes and immune responses, as well as psychosocial factors.


title: Irritable bowel syndrome

text: "SCN5A" mutations are found in a small number of people who have IBS, particularly the constipation-predominant variant (IBS-C). The resulting defect leads to disruption in bowel function, by affecting the Nav1.5 channel, in smooth muscle of the colon and pacemaker cells.


title: Irritable bowel syndrome

text: Genetic, environmental, and psychological factors seem to be important in the development of IBS. Studies have shown that IBS has a genetic component even though there is a predominant influence of environmental factors.


title: Irritable bowel syndrome

text: Dysregulated brain-gut axis, abnormal serotonin/5-hydroxytryptamine (5-HT) metabolism, and high density of mucosal nerve fibers or neurites in the intestines have been implicated in the mechanisms of IBS. A number of 5-HT receptor subtypes were involved in the IBS symptoms, including 5-HT, 5-HT, and 5-HT receptors. High levels of 5-HT receptor-expressing mucosal nerve fibers were observed in the colon of IBS patients. A role of 5-HT7 receptor in intestinal hyperalgesia was demonstrated in mouse models with visceral hypersensitivity, of which a novel 5-HT receptor antagonist administered perorally reduced intestinal pain levels.


title: Irritable bowel syndrome

text: There is evidence that abnormalities occur in the gut flora of individuals who have IBS, such as reduced diversity, a decrease in bacteria belonging to the phylum Bacteroidota, and an increase in those belonging to the phylum Bacillota. The changes in gut flora are most profound in individuals who have diarrhoea predominant IBS. Antibodies against common components (namely flagellin) of the commensal gut flora are a common occurrence in IBS affected individuals.


title: Irritable bowel syndrome

text: Chronic low-grade inflammation commonly occurs in IBS affected individuals with abnormalities found including increased enterochromaffin cells, intraepithelial lymphocytes, and mast cells resulting in chronic immune-mediated inflammation of the gut mucosa. IBS has been reported in greater quantities in multigenerational families with IBS than in the regular population. It is believed that psychological stress can induce increased inflammation and thereby cause IBS to develop in predisposed individuals.


title: Irritable bowel syndrome

text: No specific laboratory or imaging tests can diagnose irritable bowel syndrome. Diagnosis should be based on symptoms, the exclusion of worrisome features, and the performance of specific investigations to rule out organic diseases that may present similar symptoms.


title: Irritable bowel syndrome

text: The recommendations for physicians are to minimize the use of medical investigations. Rome criteria (see below) are usually used. They allow the diagnosis to be based only on symptoms, but no criteria based solely on symptoms is sufficiently accurate to diagnose IBS. Worrisome features include onset at greater than 50 years of age, weight loss, blood in the stool, iron-deficiency anemia, or a family history of colon cancer, celiac disease, or inflammatory bowel disease. The criteria for selecting tests and investigations also depends on the level of available medical resources.


title: Irritable bowel syndrome

text: The Rome criteria are consensus guidelines, initially released in 1994 and updated periodically since then. These may pertain more closely to clinical trials as in practice, patient symptoms may vary considerably. The Rome IV criteria (2016) for IBS include recurrent abdominal pain, on average, at least one day/week in the last three months, associated with two or more of the following further criteria:


title: Irritable bowel syndrome

text: The algorithm may include additional tests to guard against misdiagnosis of other diseases as IBS. Such "red flag" symptoms may include weight loss, gastrointestinal bleeding, anemia, or nocturnal symptoms. However, red flag conditions may not always contribute to accuracy in diagnosis; for instance, as many as 31% of people with IBS have blood in their stool, many possibly from hemorrhoidal bleeding.


title: Irritable bowel syndrome

text: The diagnostic algorithm identifies a name that can be applied to the person's condition based on the combination of symptoms of diarrhea, abdominal pain, and constipation. For example, the statement "50% of returning travellers had developed functional diarrhea while 25% had developed IBS" would mean half the travellers had diarrhea while a quarter had diarrhea with abdominal pain. While some researchers believe this categorization system will help physicians understand IBS, others have questioned the value of the system and suggested all people with IBS have the same underlying disease but with different symptoms.


title: Irritable bowel syndrome

text: Colon cancer, inflammatory bowel disease, thyroid disorders (hyperthyroidism or hypothyroidism), and giardiasis can all feature abnormal defecation and abdominal pain. Less common causes of this symptom profile are carcinoid syndrome, microscopic colitis, bacterial overgrowth, and eosinophilic gastroenteritis; IBS is, however, a common presentation, and testing for these conditions would yield low numbers of positive results, so it is considered difficult to justify the expense. Conditions that may present similarly include celiac disease, bile acid malabsorption, colon cancer, and dyssynergic defecation.


title: Irritable bowel syndrome

text: Ruling out parasitic infections, lactose intolerance, small intestinal bacterial overgrowth, and coeliac disease is recommended before a diagnosis of irritable bowel syndrome is made. An upper endoscopy with small bowel biopsies is necessary to identify the presence of celiac disease. An ileocolonoscopy with biopsies is useful to exclude Crohn's disease and ulcerative colitis (Inflammatory bowel disease).


title: Irritable bowel syndrome

text: Some people, managed for years for IBS, may have non-celiac gluten sensitivity (NCGS). Gastrointestinal symptoms of IBS are clinically indistinguishable from those of NCGS, but the presence of any of the following non-intestinal manifestations suggest a possible NCGS: headache or migraine, "foggy mind", chronic fatigue, fibromyalgia, joint and muscle pain, leg or arm numbness, tingling of the extremities, dermatitis (eczema or skin rash), atopic disorders, allergy to one or more inhalants, foods or metals (such as mites, graminaceae, parietaria, cat or dog hair, shellfish, or nickel), depression, anxiety, anemia, iron-deficiency anemia, folate deficiency, asthma, rhinitis, eating disorders, neuropsychiatric disorders (such as schizophrenia, autism, peripheral neuropathy, ataxia, attention deficit hyperactivity disorder) or autoimmune diseases. An improvement with a gluten-free diet of immune-mediated symptoms, including autoimmune diseases, once having reasonably ruled out coeliac disease and wheat allergy, is another way to realize a differential diagnosis.


title: Irritable bowel syndrome

text: People with IBS are at increased risk of being given inappropriate surgeries such as appendectomy, cholecystectomy, and hysterectomy due to being misdiagnosed as other medical conditions. Some common examples of misdiagnosis include infectious diseases, coeliac disease, "Helicobacter pylori", parasites (non-protozoal). The American College of Gastroenterology recommends all people with symptoms of IBS be tested for coeliac disease.


title: Irritable bowel syndrome

text: Bile acid malabsorption is also sometimes missed in people with diarrhea-predominant IBS. SeHCAT tests suggest around 30% of people with D-IBS have this condition, and most respond to bile acid sequestrants.


title: Irritable bowel syndrome

text: A number of treatments have been found to be effective, including fiber, talk therapy, antispasmodic and antidepressant medication, and peppermint oil.


title: Irritable bowel syndrome

text: FODMAPs are short-chain carbohydrates that are poorly absorbed in the small intestine. A 2018 systematic review found that although there is evidence of improved IBS symptoms with a low FODMAP diet, the evidence is of very low quality. Symptoms most likely to improve on this type of diet include urgency, flatulence, bloating, abdominal pain, and altered stool output. One national guideline advises a low FODMAP diet for managing IBS when other dietary and lifestyle measures have been unsuccessful. The diet restricts various carbohydrates which are poorly absorbed in the small intestine, as well as fructose and lactose, which are similarly poorly absorbed in those with intolerances to them. Reduction of fructose and fructan has been shown to reduce IBS symptoms in a dose-dependent manner in people with fructose malabsorption and IBS.


title: Irritable bowel syndrome

text: FODMAPs are fermentable oligo-, di-, monosaccharides and polyols, which are poorly absorbed in the small intestine and subsequently fermented by the bacteria in the distal small and proximal large intestine. This is a normal phenomenon, common to everyone. The resultant production of gas potentially results in bloating and flatulence. Although FODMAPs can produce certain digestive discomfort in some people, not only do they not cause intestinal inflammation, but they help avoid it, because they produce beneficial alterations in the intestinal flora that contribute to maintaining the good health of the colon. FODMAPs are not the cause of irritable bowel syndrome nor other functional gastrointestinal disorders, but rather a person develops symptoms when the underlying bowel response is exaggerated or abnormal.


title: Irritable bowel syndrome

text: A low-FODMAP diet consists of restricting them from the diet. They are globally trimmed, rather than individually, which is more successful than for example restricting only fructose and fructans, which are also FODMAPs, as is recommended for those with fructose malabsorption.


title: Irritable bowel syndrome

text: A low-FODMAP diet might help to improve short-term digestive symptoms in adults with irritable bowel syndrome, but its long-term follow-up can have negative effects because it causes a detrimental impact on the gut microbiota and metabolome. It should only be used for short periods of time and under the advice of a specialist. A low-FODMAP diet is highly restrictive in various groups of nutrients and can be impractical to follow in the long-term. More studies are needed to assess the true impact of this diet on health.


title: Irritable bowel syndrome

text: In addition, the use of a low-FODMAP diet without verifying the diagnosis of IBS may result in misdiagnosis of other conditions such as celiac disease. Since the consumption of gluten is suppressed or reduced with a low-FODMAP diet, the improvement of the digestive symptoms with this diet may not be related to the withdrawal of the FODMAPs, but of gluten, indicating the presence of unrecognized celiac disease, avoiding its diagnosis and correct treatment, with the consequent risk of several serious health complications, including various types of cancer.


title: Irritable bowel syndrome

text: Some evidence suggests soluble fiber supplementation (e.g., psyllium/ispagula husk) is effective. It acts as a bulking agent, and for many people with IBS-D, allows for a more consistent stool. For people with IBS-C, it seems to allow for a softer, moister, more easily passable stool.


title: Irritable bowel syndrome

text: However, insoluble fiber (e.g., bran) has not been found to be effective for IBS. In some people, insoluble fiber supplementation may aggravate symptoms.


title: Irritable bowel syndrome

text: Fiber might be beneficial in those who have a predominance of constipation. In people who have IBS-C, soluble fiber can reduce overall symptoms but will not reduce pain. The research supporting dietary fiber contains conflicting small studies complicated by the heterogeneity of types of fiber and doses used.


title: Irritable bowel syndrome

text: One meta-analysis found only soluble fiber improved global symptoms of irritable bowel, but neither type of fiber reduced pain.


title: Irritable bowel syndrome

text: An updated meta-analysis by the same authors also found soluble fiber reduced symptoms, while insoluble fiber worsened symptoms in some cases. Positive studies have used 10–30 grams per day of ispaghula (psyllium). One study specifically examined the effect of dose, and found 20 g of ispaghula (psyllium) were better than 10 g and equivalent to 30 g per day.


title: Irritable bowel syndrome

text: Recent studies have demonstrated the potential beneficial effects of Physical activity on irritable bowel syndrome. Some randomised controlled trials (RCTs) have demonstrated a beneficial effect of physical activity on IBS symptoms. Three RCTs showed a significant improvement in Irritable Bowel Syndrome – Severity Scoring System, while 1 RCT showed a significant improvement only in symptoms of constipation. In light of this, the latest British Society of Gastroenterology guidelines on the management of IBS have stated that all patients with IBS should be advised to take regular exercise (strong recommendation, weak certainty evidence), whereas the American College of Gastroenterology guidelines have suggested with a lower certainty of evidence.


title: Irritable bowel syndrome

text: Exercise is Medicine recently provided simple practical indications based on world health organization guidelines, which should be followed when physicians prescribing exercise training. As shown by the previous studies, a good Physical activity prescription during the visit could significantly improve patients’ adherence and, consequently, lead to a significant clinical benefit for symptoms of irritable bowel syndrome.


title: Irritable bowel syndrome

text: Medications that may be useful include antispasmodics such as dicyclomine and antidepressants. Both H1-antihistamines and mast cell stabilizers have shown efficacy in reducing pain associated with visceral hypersensitivity in IBS.


title: Irritable bowel syndrome

text: A number of 5-HT3 antagonists or 5-HT4 agonists were proposed clinically to treat diarrhea-predominant IBS and constipation-predominant IBS, respectively. However, severe side effects have resulted in its withdrawal by food and drug administration and are now prescribed under emergency investigational drug protocol. Other 5-HT receptor subtypes, such as 5-HT7 receptor, have yet to be developed.


title: Irritable bowel syndrome

text: For people who do not adequately respond to dietary fiber, osmotic laxatives such as polyethylene glycol, sorbitol, and lactulose can help avoid "cathartic colon" which has been associated with stimulant laxatives. Lubiprostone is a gastrointestinal agent used for the treatment of constipation-predominant IBS.


title: Irritable bowel syndrome

text: The use of antispasmodic drugs (e.g., anticholinergics such as hyoscyamine or dicyclomine) may help people who have cramps or diarrhea. A meta-analysis by the Cochrane Collaboration concludes if seven people are treated with antispasmodics, one of them will benefit. Antispasmodics can be divided into two groups: neurotropics and musculotropics. Musculotropics, such as mebeverine, act directly at the smooth muscle of the gastrointestinal tract, relieving spasm without affecting normal gut motility. Since this action is not mediated by the autonomic nervous system, the usual anticholinergic side effects are absent. The antispasmodic otilonium may also be useful.


title: Irritable bowel syndrome

text: Proton-pump inhibitors (PPIs) used to suppress stomach acid production may cause small intestinal bacterial overgrowth (SIBO) leading to IBS symptoms. Discontinuation of PPIs in selected individuals has been recommended as it may lead to an improvement or resolution of IBS symptoms.


title: Irritable bowel syndrome

text: Evidence is conflicting about the benefit of antidepressants in IBS. Some meta-analyses have found a benefit, while others have not. There is good evidence that low doses of tricyclic antidepressants (TCAs) can be effective for IBS. With TCAs, about one in three people improve.


title: Irritable bowel syndrome

text: However, the evidence is less robust for the effectiveness of other antidepressant classes such as selective serotonin reuptake inhibitor antidepressants (SSRIs). Because of their serotonergic effect, SSRIs have been studied in IBS, especially for people who are constipation predominant. As of 2015, the evidence indicates that SSRIs do not help. Antidepressants are not effective for IBS in people with depression, possibly because lower doses of antidepressants than the doses used to treat depression are required for relief of IBS.


title: Irritable bowel syndrome

text: Rifaximin may be useful as a treatment for IBS symptoms, including abdominal bloating and flatulence, although relief of abdominal distension is delayed. It is especially useful where small intestinal bacterial overgrowth is involved.


title: Irritable bowel syndrome

text: In individuals with IBS and low levels of vitamin D supplementation is recommended. Some evidence suggests that vitamin D supplementation may improve symptoms of IBS, but further research is needed before it can be recommended as a specific treatment for IBS.


title: Irritable bowel syndrome

text: There is low quality evidence from studies with poor methodological quality that psychological therapies can be effective in the treatment of IBS. Reducing stress may reduce the frequency and severity of IBS symptoms. Techniques that may be helpful include regular exercise, such as swimming, walking, or running.


title: Irritable bowel syndrome

text: Vagus nerve stimulation has anti-inflammatory effects and its potential for the treatment of IBS is actively researched.


title: Irritable bowel syndrome

text: A meta-analysis found no benefits of acupuncture relative to placebo for IBS symptom severity or IBS-related quality of life.


title: Irritable bowel syndrome

text: Probiotics can be beneficial in the treatment of IBS; taking 10 billion to 100 billion beneficial bacteria per day is recommended for beneficial results. However, further research is needed on individual strains of beneficial bacteria for more refined recommendations. Probiotics have positive effects such as enhancing the intestinal mucosal barrier, providing a physical barrier, bacteriocin production (resulting in reduced numbers of pathogenic and gas-producing bacteria), reducing intestinal permeability and bacterial translocation, and regulating the immune system both locally and systemically among other beneficial effects. Probiotics may also have positive effects on the gut–brain axis by their positive effects countering the effects of stress on gut immunity and gut function.


title: Irritable bowel syndrome

text: A number of probiotics have been found to be effective, including "Lactobacillus plantarum", and "Bifidobacteria infantis"; but one review found only "Bifidobacteria infantis" showed efficacy. "B. infantis" may have effects beyond the gut via it causing a reduction of proinflammatory cytokine activity and elevation of blood tryptophan levels, which may cause an improvement in symptoms of depression. Some yogurt is made using probiotics that may help ease symptoms of IBS. A probiotic yeast called "Saccharomyces boulardii" has some evidence of effectiveness in the treatment of irritable bowel syndrome.


title: Irritable bowel syndrome

text: Certain probiotics have different effects on certain symptoms of IBS. For example, "Bifidobacterium breve", "B. longum," and "Lactobacillus acidophilus" have been found to alleviate abdominal pain. "B. breve, B. infantis, L. casei", or "L. plantarum" species alleviated distension symptoms. "B. breve, B. infantis, L. casei, L. plantarum, B. longum, L. acidophilus, L. bulgaricus", and "Streptococcus salivarius" ssp. "thermophilus" have all been found to affect flatulence levels. Most clinical studies show probiotics do not improve straining, sense of incomplete evacuation, stool consistency, fecal urgency, or stool frequency, although a few clinical studies did find some benefit of probiotic therapy. The evidence is conflicting for whether probiotics improve overall quality of life scores.


title: Irritable bowel syndrome

text: Probiotics may exert their beneficial effects on IBS symptoms via preserving the gut microbiota, normalisation of cytokine blood levels, improving the intestinal transit time, decreasing small intestine permeability, and by treating small intestinal bacterial overgrowth of fermenting bacteria. A fecal transplant does not appear useful as of 2019.


title: Irritable bowel syndrome

text: The most clinically researched multi-strain probiotic is the De Simone Formulation. Developed by a gastroenterologist medical doctor, the formulation has been studied in over 70 human clinical trials since the 1990s including for dysbiosis factors relating to irritable bowel syndrome in children and adults.


title: Irritable bowel syndrome

text: Peppermint oil appears useful. In a meta-analysis it was found to be superior to placebo for improvement of IBS symptoms, at least in the short term. An earlier meta-analysis suggested the results of peppermint oil were tentative as the number of people studied was small and blinding of those receiving treatment was unclear. Safety during pregnancy has not been established, however, and caution is required not to chew or break the enteric coating; otherwise, gastroesophageal reflux may occur as a result of lower esophageal sphincter relaxation. Occasionally, nausea and perianal burning occur as side effects. Iberogast, a multi-herbal extract, was found to be superior in efficacy to placebo. A comprehensive meta-analysis using twelve random trials resulted that the use of peppermint oil is an effective therapy for adults with irritable bowel syndrome.


title: Irritable bowel syndrome

text: Research into cannabinoids as treatment for IBS is limited. GI propulsion, secretion, and inflammation in the gut are all modulated by the ECS (Endocannabinoid system), providing a rationale for cannabinoids as treatment candidates for IBS.


title: Irritable bowel syndrome

text: Only limited evidence exists for the effectiveness of other herbal remedies for IBS. As with all herbs, it is wise to be aware of possible drug interactions and adverse effects.


title: Irritable bowel syndrome

text: The prevalence of IBS varies by country and by age range examined. The bar graph at right shows the percentage of the population reporting symptoms of IBS in studies from various geographic regions (see table below for references). The following table contains a list of studies performed in different countries that measured the prevalence of IBS and IBS-like symptoms:


title: Irritable bowel syndrome

text: In western countries, women are around two to three times more likely to be diagnosed with IBS and four to five times more likely to seek specialty care for it than men. However, women in East Asian countries are not more likely than men to have irritable bowel syndrome, and there are conflicting reports about the female predominance of the disease in Africa and other parts of Asia. People diagnosed with IBS are usually younger than 45 years old. Studies of females with IBS show symptom severity often fluctuates with the menstrual cycle, suggesting hormonal differences may play a role. Endorsement of gender-related traits has been associated with quality of life and psychological adjustment in IBS. The increase in gastrointestinal symptoms during menses or early menopause may be related to declining or low estrogen and progesterone, suggesting that estrogen withdrawal may play a role in IBS. Gender differences in healthcare-seeking may also play a role. Gender differences in trait anxiety may contribute to lower pain thresholds in women, putting them at greater risk for a number of chronic pain disorders. Finally, sexual trauma is a major risk factor for IBS, as are other forms of abuse. Because women are at higher risk of sexual abuse than men, sex-related risk of abuse may contribute to the higher rate of IBS in women.


title: Irritable bowel syndrome

text: The concept of an "irritable bowel" was introduced by P.W. Brown, first in The Journal Of The Kansas Medical Society in 1947 and later in the "Rocky Mountain Medical Journal" in 1950. The term was used to categorize people who developed symptoms of diarrhea, abdominal pain, and constipation, but where no well-recognized infective cause could be found. Early theories suggested the irritable bowel was caused by a psychosomatic or mental disorder.


title: Irritable bowel syndrome

text: The aggregate cost of irritable bowel syndrome in the United States has been estimated at $1.7–10 billion in direct medical costs, with an additional $20 billion in indirect costs, for a total of $21.7–30 billion. A study by a managed care company comparing medical costs for people with IBS to non-IBS controls identified a 49% annual increase in medical costs associated with a diagnosis of IBS. People with IBS incurred average annual direct costs of $5,049 and $406 in out-of-pocket expenses in 2007. A study of workers with IBS found that they reported a 34.6% loss in productivity, corresponding to 13.8 hours lost per 40 hour week. A study of employer-related health costs from a Fortune 100 company conducted with data from the 1990s found people with IBS incurred US$4527 in claims costs vs. $3276 for controls. A study on Medicaid costs conducted in 2003 by the University of Georgia College of Pharmacy and Novartis found IBS was associated in an increase of $962 in Medicaid costs in California, and $2191 in North Carolina. People with IBS had higher costs for physician visits, outpatients visits, and prescription drugs. The study suggested the costs associated with IBS were comparable to those found for people with asthma.


title: Irritable bowel syndrome

text: Individuals with IBS have been found to have decreased diversity and numbers of Bacteroidota microbiota. Preliminary research into the effectiveness of fecal microbiota transplant in the treatment of IBS has been very favourable with a 'cure' rate of between 36 percent and 60 percent with remission of core IBS symptoms persisting at 9 and 19 months follow up. Treatment with probiotic strains of bacteria has shown to be effective, though not all strains of microorganisms confer the same benefit and adverse side effects have been documented in a minority of cases.


title: Irritable bowel syndrome

text: There is increasing evidence for the effectiveness of mesalazine (5-aminosalicylic acid) in the treatment of IBS. Mesalazine is a drug with anti-inflammatory properties that has been reported to significantly reduce immune mediated inflammation in the gut of IBS affected individuals with mesalazine therapy resulting in improved IBS symptoms as well as feelings of general wellness in IBS affected people. It has also been observed that mesalazine therapy helps to normalise the gut flora which is often abnormal in people who have IBS. The therapeutic benefits of mesalazine may be the result of improvements to the epithelial barrier function. Treatment based on "abnormally" high IgG antibodies cannot be recommended.


title: Irritable bowel syndrome

text: Differences in visceral sensitivity and intestinal physiology have been noted in IBS. Mucosal barrier reinforcement in response to oral 5-HTP was absent in IBS compared to controls. IBS/IBD individuals are less often HLA DQ2/8 positive than in upper functional gastrointestinal disease and healthy populations.


title: Irritable bowel syndrome

text: A similar syndrome is found in rats ("Rattus" spp.). In rats a short-chain fatty acid receptor is involved. Karaki "et al.", 2006 finds a free fatty acid receptor 2 subtype that is expressed in both enteroendocrine cells and mucosal mast cells. These cells then respond in an exaggerated way to the IBS rat's own large quantity of maldigestion products.


title: Frigate

text: A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat.


title: Frigate

text: The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and maneuverability, intended to be used in scouting, escort and patrol roles. The term was applied loosely to ships varying greatly in design. In the second quarter of the 18th century, the 'true frigate' was developed in France. This type of vessel was characterised by possessing only one armed deck, with an unarmed deck below it used for berthing the crew.


title: Frigate

text: Late in the 19th century (British and French prototypes were constructed in 1858), armoured frigates were developed as powerful ironclad warships, the term frigate was used because of their single gun deck. Later developments in ironclad ships rendered the frigate designation obsolete and the term fell out of favour.


title: Frigate

text: During the Second World War the name 'frigate' was reintroduced to describe a seagoing escort ship intermediate in size between a corvette and a destroyer. After World War II, a wide variety of ships have been classified as frigates. Often there has been little consistency in usage. While some navies have regarded frigates as principally large ocean-going anti-submarine warfare (ASW) combatants, others have used the term to describe ships that are otherwise recognisable as corvettes, destroyers, and even nuclear-powered guided-missile cruisers. Some European navies use the term "frigate" for both their destroyers and frigates. The rank "frigate captain" derives from the name of this type of ship.


title: Frigate

text: The term "frigate" (Italian: "fregata"; Dutch: "fregat"; Spanish/Catalan/Portuguese/Sicilian: "fragata"; French: "frégate") originated in the Mediterranean in the late 15th century, referring to a lighter galley-type warship with oars, sails and a light armament, built for speed and maneuverability.


title: Frigate

text: The etymology of the word remains uncertain, although it may have originated as a corruption of "", a Latin word for an open vessel with no lower deck. "Aphractus", in turn, derived from the Ancient Greek phrase ἄφρακτος ναῦς ("aphraktos naus") – "undefended ship". In 1583, during the Eighty Years' War of 1568–1648, Habsburg Spain recovered the southern Netherlands from the Protestant rebels. This soon resulted in the use of the occupied ports as bases for privateers, the "Dunkirkers", to attack the shipping of the Dutch and their allies. To achieve this the Dunkirkers developed small, maneuverable, sailing vessels that came to be referred to as frigates. The success of these Dunkirker vessels influenced the ship design of other navies contending with them, but because most regular navies required ships of greater endurance than the Dunkirker frigates could provide, the term soon came to apply less exclusively to any relatively fast and elegant sail-only warship. In French, the term "frigate" gave rise to a verb – "frégater", meaning 'to build long and low', and to an adjective, adding more confusion. Even the huge English could be described as "a delicate frigate" by a contemporary after her upper decks were reduced in 1651.


title: Frigate

text: The navy of the Dutch Republic became the first navy to build the larger ocean-going frigates. The Dutch navy had three principal tasks in the struggle against Spain: to protect Dutch merchant ships at sea, to blockade the ports of Spanish-held Flanders to damage trade and halt enemy privateering, and to fight the Spanish fleet and prevent troop landings. The first two tasks required speed, shallowness of draft for the shallow waters around the Netherlands, and the ability to carry sufficient supplies to maintain a blockade. The third task required heavy armament, sufficient to stand up to the Spanish fleet. The first of the larger battle-capable frigates were built around 1600 at Hoorn in Holland. By the later stages of the Eighty Years' War the Dutch had switched entirely from the heavier ships still used by the English and Spanish to the lighter frigates, carrying around 40 guns and weighing around 300 tons.


title: Frigate

text: The effectiveness of the Dutch frigates became most evident in the Battle of the Downs in 1639, encouraging most other navies, especially the English, to adopt similar designs.


title: Frigate

text: The fleets built by the Commonwealth of England in the 1650s generally consisted of ships described as "frigates", the largest of which were two-decker "great frigates" of the third rate. Carrying 60 guns, these vessels were as big and capable as "great ships" of the time; however, most other frigates at the time were used as "cruisers": independent fast ships. The term "frigate" implied a long hull-design, which relates directly to speed (see hull speed) and which also, in turn, helped the development of the broadside tactic in naval warfare.


title: Frigate

text: At this time, a further design evolved, reintroducing oars and resulting in galley frigates such as of 1676, which was rated as a 32-gun fifth-rate but also had a bank of 40 oars set below the upper deck which could propel the ship in the absence of a favourable wind.


title: Frigate

text: In Danish, the word "fregat" often applies to warships carrying as few as 16 guns, such as , which the British classified as a sloop.


title: Frigate

text: Under the rating system of the Royal Navy, by the middle of the 18th century, the term "frigate" was technically restricted to single-decked ships of the fifth rate, though small 28-gun frigates classed as sixth rate.


title: Frigate

text: The classic sailing frigate, or 'true frigate', well-known today for its role in the Napoleonic Wars, can be traced back to French developments in the second quarter of the 18th century. The French-built of 1740 is often regarded as the first example of this type. These ships were square-rigged and carried all their main guns on a single continuous upper deck. The lower deck, known as the "gun deck", now carried no armament, and functioned as a "berth deck" where the crew lived, and was in fact placed below the waterline of the new frigates. The typical earlier cruiser had a partially armed lower deck, from which it was known as a 'half-battery' or "demi-batterie" ship. Removing the guns from this deck allowed the height of the hull upperworks to be lowered, giving the resulting 'true-frigate' much improved sailing qualities. The unarmed deck meant that the frigate's guns were carried comparatively high above the waterline; as a result, when seas were too rough for two-deckers to open their lower deck gunports, frigates were still able to fight with all their guns (see the action of 13 January 1797, for an example when this was decisive).


title: Frigate

text: The Royal Navy captured a number of the new French frigates, including "Médée", during the War of the Austrian Succession (1740–1748) and were impressed by them, particularly for their inshore handling capabilities. They soon built copies (ordered in 1747), based on a French privateer named "Tygre", and started to adapt the type to their own needs, setting the standard for other frigates as the leading naval power. The first British frigates carried 28 guns including an upper deck battery of twenty-four 9-pounder guns (the remaining four smaller guns were carried on the quarterdeck) but soon developed into fifth-rate ships of 32 or 36 guns including an upper deck battery of twenty-six 12-pounder guns, with the remaining six or ten smaller guns carried on the quarterdeck and forecastle. Technically, 'rated ships' with fewer than 28 guns could not be classed as frigates but as "post ships"; however, in common parlance most post ships were often described as "frigates", the same casual misuse of the term being extended to smaller two-decked ships that were too small to stand in the line of battle.


title: Frigate

text: A total of fifty-nine French sailing frigates were built between 1777 and 1790, with a standard design averaging a hull length of and an average draught of . The new frigates recorded sailing speeds of up to , significantly faster than their predecessor vessels.


title: Frigate

text: In 1778, the British Admiralty introduced a larger "heavy" frigate, with a main battery of twenty-six or twenty-eight 18-pounder guns (with smaller guns carried on the quarterdeck and forecastle). This move may reflect the naval conditions at the time, with both France and Spain as enemies the usual British preponderance in ship numbers was no longer the case and there was pressure on the British to produce cruisers of individually greater force. In reply, the first French 18-pounder frigates were laid down in 1781. The 18-pounder frigate eventually became the standard frigate of the French Revolutionary and Napoleonic Wars. The British produced larger, 38-gun, and slightly smaller, 36-gun, versions and also a 32-gun design that can be considered an 'economy version'. The 32-gun frigates also had the advantage that they could be built by the many smaller, less-specialised shipbuilders.


title: Frigate

text: Frigates could (and usually did) additionally carry smaller carriage-mounted guns on their quarterdecks and forecastles (the superstructures above the upper deck). In 1778 the Carron Iron Company of Scotland produced a naval gun which would revolutionise the armament of smaller naval vessels, including the frigate. The carronade was a large calibre, short-barrelled naval cannon which was light, quick to reload and needed a smaller crew than a conventional long gun. Due to its lightness it could be mounted on the forecastle and quarterdeck of frigates. It greatly increased the firepower, measured in weight of metal (the combined weight of all projectiles fired in one broadside), of these vessels. The disadvantages of the carronade were that it had a much shorter range and was less accurate than a long gun. The British quickly saw the advantages of the new weapon and soon employed it on a wide scale. The US Navy also copied the design soon after its appearance. The French and other nations eventually adopted variations of the weapon in succeeding decades. The typical heavy frigate had a main armament of 18-pounder long guns, plus 32-pounder carronades mounted on its upper decks.


title: Frigate

text: The first 'super-heavy frigates', armed with 24-pounder long guns, were built by the naval architect F H Chapman for the Swedish navy in 1782. Because of a shortage of ships-of-the-line, the Swedes wanted these frigates, the "Bellona" class, to be able to stand in the battle line in an emergency. In the 1790s the French built a small number of large 24-pounder frigates, such as and "Egyptienne", they also cut-down (reduced the height of the hull to give only one continuous gun deck) a number of older ships-of-the-line (including ) to produce super-heavy frigates, the resulting ship was known as a "rasée". It is not known whether the French were seeking to produce very potent cruisers or merely to address stability problems in old ships. The British, alarmed by the prospect of these powerful heavy frigates, responded by rasée-ing three of the smaller 64-gun battleships, including , which went on to have a very successful career as a frigate. At this time the British also built a few 24-pounder-armed large frigates, the most successful of which was (1,277 tons).


title: Frigate

text: In 1797, three of the United States Navy's first six major ships were rated as 44-gun frigates, which operationally carried fifty-six to sixty 24-pounder long guns and 32-pounder or 42-pounder carronades on two decks; they were exceptionally powerful. These ships were so large, at around 1,500 tons, and well-armed that they were often regarded as equal to ships of the line, and after a series of losses at the outbreak of the War of 1812, Royal Navy fighting instructions ordered British frigates (usually of 38 guns or less) to never engage the large American frigates at any less than a 2:1 advantage. , preserved as a museum ship by the US Navy, is the oldest commissioned warship afloat, and is a surviving example of a frigate from the Age of Sail. "Constitution" and her sister ships and were created in a response to deal with the Barbary Coast pirates and in conjunction with the Naval Act of 1794. Joshua Humphreys proposed that only live oak, a tree that grew only in America, should be used to build these ships.


title: Frigate

text: The British, wounded by repeated defeats in single-ship actions, responded to the success of the American 44s in three ways. They built a class of conventional 40-gun, 24-pounder armed frigates on the lines of "Endymion". They cut down three old 74-gun Ships-of-the-Line into "rasées", producing frigates with a 32-pounder main armament, supplemented by 42-pounder carronades. These had an armament that far exceeded the power of the American ships. Finally, and , 1,500-ton spar-decked frigates (with an enclosed waist, giving a continuous line of guns from bow to stern at the level of the quarterdeck/forecastle), were built, which were an almost exact match in size and firepower to the American 44-gun frigates.


title: Frigate

text: Frigates were perhaps the hardest-worked of warship types during the Age of Sail. While smaller than a ship-of-the-line, they were formidable opponents for the large numbers of sloops and gunboats, not to mention privateers or merchantmen. Able to carry six months' stores, they had very long range; and vessels larger than frigates were considered too valuable to operate independently.


title: Frigate

text: Frigates scouted for the fleet, went on commerce-raiding missions and patrols, and conveyed messages and dignitaries. Usually, frigates would fight in small numbers or singly against other frigates. They would avoid contact with ships-of-the-line; even in the midst of a fleet engagement it was bad etiquette for a ship of the line to fire on an enemy frigate which had not fired first. Frigates were involved in fleet battles, often as "repeating frigates". In the smoke and confusion of battle, signals made by the fleet commander, whose flagship might be in the thick of the fighting, might be missed by the other ships of the fleet. Frigates were therefore stationed to windward or leeward of the main line of battle, and had to maintain a clear line of sight to the commander's flagship. Signals from the flagship were then repeated by the frigates, which themselves standing out of the line and clear from the smoke and disorder of battle, could be more easily seen by the other ships of the fleet. If damage or loss of masts prevented the flagship from making clear conventional signals, the repeating frigates could interpret them and hoist their own in the correct manner, passing on the commander's instructions clearly.


title: Frigate

text: For officers in the Royal Navy, a frigate was a desirable posting. Frigates often saw action, which meant a greater chance of glory, promotion, and prize money.


title: Frigate

text: Unlike larger ships that were placed in ordinary, frigates were kept in service in peacetime as a cost-saving measure and to provide experience to frigate captains and officers which would be useful in wartime. Frigates could also carry marines for boarding enemy ships or for operations on shore; in 1832, the frigate landed a party of 282 sailors and Marines ashore in the US Navy's first Sumatran expedition.


title: Frigate

text: Frigates remained a crucial element of navies until the mid-19th century. The first ironclads were classified as "frigates" because of the number of guns they carried. However, terminology changed as iron and steam became the norm, and the role of the frigate was assumed first by the protected cruiser and then by the light cruiser.


title: Frigate

text: Frigates are often the vessel of choice in historical naval novels due to their relative freedom compared to ships-of-the-line (kept for fleet actions) and smaller vessels (generally assigned to a home port and less widely ranging). For example, the Patrick O'Brian Aubrey–Maturin series, C. S. Forester's Horatio Hornblower series and Alexander Kent's Richard Bolitho series. The motion picture "" features a reconstructed historic frigate, HMS "Rose", to depict Aubrey's frigate HMS "Surprise".


title: Frigate

text: Vessels classed as frigates continued to play a great role in navies with the adoption of steam power in the 19th century. In the 1830s, navies experimented with large paddle steamers equipped with large guns mounted on one deck, which were termed "paddle frigates".


title: Frigate

text: From the mid-1840s on, frigates which more closely resembled the traditional sailing frigate were built with steam engines and screw propellers. These "screw frigates", built first of wood and later of iron, continued to perform the traditional role of the frigate until late in the 19th century.


title: Frigate

text: From 1859, armour was added to ships based on existing frigate and ship of the line designs. The additional weight of the armour on these first ironclad warships meant that they could have only one gun deck, and they were technically frigates, even though they were more powerful than existing ships-of-the-line and occupied the same strategic role. The phrase "armoured frigate" remained in use for some time to denote a sail-equipped, broadside-firing type of ironclad.