由于结肠直肠癌通常继发于腺瘤性息肉 ,人们认为抑制结肠直肠腺瘤的发展或切除已经发生的腺瘤 ,可以抑制结肠直肠癌。每天补充含热量低而含水果蔬菜高的饮食连续 3年至 4年 ,对新生结肠直肠腺瘤的发生率并无影响。研究发现提示其与抑制结肠直肠癌的相关性还不很确定 Since colorectal cancer is usually secondary to adenomatous polyps, it is thought that inhibition of the development of colorectal adenomas or removal of adenomas that have already occurred may inhibit colorectal cancer. Daily supplementation with a low caloric diet containing high fruits and vegetables for 3 to 4 years had no effect on the incidence of neonatal colorectal adenomas. Findings suggest that its relevance to the inhibition of colorectal cancer is not well established