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大肠息肉是肠道黏膜的突起性病变,目前关于大肠息肉病因的研究主要体现在中西医两方面,其中吸烟、饮酒、高脂肪饮食、叶酸摄入不足增加肠息肉患病风险,若叶酸过量会加速息肉癌变进程;代谢异常,尤其是高脂血症、血清胰岛素水平、肥胖影响息肉的形成与复发;幽门螺杆菌感染和胆囊息肉增加肠息肉的发病率;而中医学则认为阳虚、湿热、寒湿、湿浊、痰浊及瘀血是息肉的形成原因.“,”Colorectal polyps are protuberances formed on intestinal mucosa.The researches of their etiol-ogy involve both sides of traditional Chinese medicine and Western medicine.On one hand,smoking,drinking and intake of fatty foods,folic acid deficiency increase the risk of the disease,but polyp canceration can develop rapidly if the folic acid is excessive.While metabolic disturbance,especially hyperlipidemia,serum insulinlevel and obesity influence on the formation and recurrence of polyps,besides,incidence of the disease is increased because of helicobacter pylori infection and gallbladder disease.On the other hand,deficiency of yang,damp-heat,cold-dampness,dampness,phlegm and blood stasis are the effect factors of colorectal pol-yps,in terms of traditional Chinese medicine.