The most common<unk> ns account for about 90% of all allergic reactions; in adults they include shellfish, peanuts, tree nuts, fish, and egg. In children, they include milk, eggs, peanuts, and tree nuts. Six to 8% of children under the age of three have<unk> es and nearly 4% of adults have<unk> es. For reasons not entirely understood, the diagnosis of<unk> es has apparently become more common in Western nations recently. One possible explanation for this is the "old friends" hypothesis which suggests that non disease causing organisms, such as helminths, could protect against allergy. Therefore, reduced exposure to these organisms, particularly in developed countries, could have contributed towards the increase. In the United States,<unk>  affects as many as 5% of infants less than three years of age and 3% to 4% of adults. A similar prevalence is found in Canada. About 75% of children who have allergies to milk protein are able to tolerate baked-in milk products, i.e., muffins, cookies, cake, and hydrolyzed formulas. About 50% of children with allergies to milk, egg, soy, peanuts, tree nuts, and wheat will outgrow their allergy by the age of 6. Those who are still allergic by the age of 12 or so have less than an 8% chance of outgrowing the allergy. Peanut and tree nut allergies are less likely to be outgrown, although evidence shows that about 20% of those with peanut allergies and 9% of those with tree nut allergies will outgrow them. In Japan, allergy to buckwheat flour, used for soba noodles, is more common than peanuts, tree nuts or<unk> s made from soy beans. United States In the United States, an estimated 12 million people have<unk> es.<unk>  affects as many as 5% of infants less than three years of age and 3% to 4% of adults. The prevalence of<unk> es is rising.<unk> es cause roughly 30,000 emergency room visits and 150 deaths per year.
Food allergy
Coeliac disease
Metal allergy
Foodborne illness
Nickel allergy
Food intolerance
Poultry allergy
Sesame allergy