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过敏是现代人头痛的文明病之一。根据调查发现,生长在大家庭的小孩较不易罹患过敏,这便是“卫生假设”的由来。现代与古代,人类生活时面对的自然环境,可能大为不同:尚未进入定居的农业文明前,人类或渔猎或采集,与动植物的接触尚始于襁褓;待进入农牧社会后,人与特种家禽家畜有了更亲密的接触,反与野兽接触日稀。
Allergy is one of the civilized diseases of modern headaches. According to the survey found that children living in extended families are less susceptible to allergies, this is the “health hypothesis” of the origin. In the modern and ancient times, the natural environment faced by human beings may be greatly different. Before entering the settled agricultural civilization, human beings or fishing or gathering or gathering with animals and plants are still beginning to covet. After entering the farming and animal husbandry society, Special poultry and livestock have a more intimate contact with anti-beast contact with the thinning.