我国胃癌在各种恶性肿瘤中居首位,好发年龄在50岁以上,男女发病率之比为2∶1。1病因胃癌的确切病因不十分明确,但以下因素与发病有关:1.1地域环境及饮食生活因素胃癌发病有明显的地域性差别,在我国的西北与东部沿海地区胃癌发病率比南方地区明显增高。长期食用熏烤、盐腌食品的人群中胃远端癌发病率高,与食品中亚硝酸盐、真菌毒素、多环芳烃化合物等致癌物或前致癌物含量高有关;食物中缺乏新鲜蔬菜与水果与发病也有一定关系。吸 The incidence of gastric cancer in our country ranks first in a variety of malignant tumors, good hair over the age of 50, the incidence of men and women was 2: 1. The exact cause of gastric cancer is not very clear, but the following factors and pathogenesis: 1.1 regional environment and diet Living factors The incidence of gastric cancer has obvious regional differences in China’s northwestern and eastern coastal areas than the incidence of gastric cancer was significantly higher. Long-term consumption of smoked, salted food in the population of patients with high incidence of gastric cancer, and food nitrite, mycotoxins, polycyclic aromatic hydrocarbons and other carcinogens or carcinogens before the high content; lack of fresh vegetables and food There is also a certain relationship between fruit and disease. Suck