一、提倡进食多种食物,要包括以下五大类:第一类为谷类及薯类;第二类为动物性食物;第三类为豆类及豆制品;第四类为蔬菜、水果类;第五类为纯热能食物,包括动植物油、糖等。注意粗细搭配,多吃天然食物,少吃工业食品。二、要多吃蔬菜、水果和薯类。美国癌症研究所和世界癌症研究基金会联合提出预防癌症14条膳食准则,其中要求每天吃400～800克的蔬菜和水果。三、要坚持每天摄入奶类、豆类及其制品。 First, to promote eating a variety of foods, to include the following five categories: the first category is cereals and tubers; the second category is animal foods; the third category is beans and soy products; the fourth category is vegetables, fruits; The fifth category is pure heat food, including animal and vegetable oils, sugar and so on. Pay attention to the thickness, eat more natural foods, eat less industrial foods. Second, we should eat more vegetables, fruits and potatoes. The American Cancer Institute and the World Cancer Research Foundation jointly proposed 14 dietary guidelines for the prevention of cancer, which require eating 400 to 800 grams of vegetables and fruits daily. Third, we must insist on daily intake of milk, beans and their products.