ONS survey: Smoking halves in 40 years 7 March 2013 Last updated at 12:27 Smoking in Britain has more than halved and people are drinking on fewer nights of the week, according to a snapshot survey covering the past 40 years. The General Lifestyle Survey indicates 45% of adults smoked in 1974 compared with 20% in 2011. The proportion of men who said they drank alcohol at least five days a week fell from 22% in 2005 to 16% in 2011. The proportion of women drinking five days a week dropped from 13% to 9% over the same period. There have been repeated campaigns to reduce smoking, which can cause heart problems and lung cancer. The role of smoking in society has changed significantly, with smoking bans in the work-place coming into force across the UK and bans on cigarette advertising. Smoking now looks less of a male-dominated habit. Men are still more likely to be smokers - 21% of men now smoke compared with 19% of women. However, back in 1974 the gulf was much larger - 51% of men and 41% of women. The statistics suggest married people are less likely to smoke than singles, and the unemployed are more likely to smoke than their neighbours in work. Booze Older people are more likely to have a regular drink, the data indicates. Men and women aged 45 and above are more likely to drink alcohol on five or more days each week than younger generations. The most significant changes in the past decade were in 16-24-year-olds. In young men, the proportion drinking more than four units on their biggest drinking session of the week fell from 46% to 32% between 2005 and 2011. There was a similar pattern in women. However, the Office for National Statistics (ONS) figures do not look at the amount each person is drinking. This is thought to be 40% higher higher now that it was 40 years ago, despite a drop since 2004.