How to prevent sigmoid colon cancer

Colorectal cancer is actually a malignant tumor that occurs in the epithelial cells of the large intestine mucosa. Colorectal cancer includes three major cancerous parts: colon cancer, rectal cancer, and anal canal cancer. Among them, rectal cancer has the highest incidence rate and basically ranks first in tumor incidence. Since the incidence rate is so high, how can we prevent sigmoid colon cancer?

In terms of dietary intervention for preventing colon cancer, dietary fiber has been the most studied. As early as the 1960s and 1970s, Burkitt discovered that colon cancer was very rare among black Africans, and that the diet of indigenous Africans contained a lot of dietary fiber, so he proposed the hypothesis that a high-fiber diet was a protective factor for colon cancer. A large number of subsequent studies have shown that dietary fiber can dilute or absorb carcinogens in feces and speed up the passage of food residues in the intestines, thereby reducing the exposure of the intestinal mucosa to carcinogens in food. At the same time, dietary fiber can also protect against colon cancer by changing the metabolism of bile acid, lowering the pH of the colon, and increasing the production of short-chain fatty acids.
To prevent colon cancer, you should eat more vegetables rich in dietary fiber, such as celery, leeks, cabbage, radish and other green leafy vegetables. Vegetables rich in dietary fiber can stimulate intestinal peristalsis, increase the frequency of bowel movements, and remove carcinogenic and toxic substances from the feces. If colon cancer bulges into the intestinal cavity and the intestinal cavity becomes narrow, you should control the intake of dietary fiber, because excessive intake of dietary fiber can cause intestinal obstruction. At this time, you should give easily digestible, soft semi-fluid foods, such as millet porridge, thick lotus root soup, rice soup, porridge, cornmeal porridge, egg custard, tofu brain, etc. These foods can reduce the stimulation to the intestines, pass through the intestinal cavity more smoothly, and prevent the occurrence of intestinal obstruction.