屁虽臭不可闻,但放屁是人体正常的生理需要。国外有科学家调查发现,一个人每天放屁次数6至20次不等。每天平均每个人释放的废气在500至1500毫升之间。不放屁或者放屁次数少,意味着更容易发生胀气、肠胃道疾病。如果人不仅数日不放屁,也不拉屎,还伴有阵阵腹痛,则往往是肠道 Fart though smelly can not smell, but farting is the body’s normal physiological needs. A foreign scientist survey found that a person farting 6 to 20 times a day. On average, each person releases between 500 and 1500 milliliters of exhaust gas per day. Not fart or less fart, means more prone to flatulence, gastrointestinal diseases. If people not only do not fart for a few days, nor shit, but also accompanied by abdominal pain, it is often the intestine