Certain groups are not suitable for iron supplementation A similar situation exists among human bowel cancer patients, with about eight out of ten bowel cancer patients belonging to the group with defective APC gene. Therefore, people with genetic APC defects are not suitable for excessive intake of iron. Iron is high in pork, beef and other “red meat”, and there have been medical studies in the past showing that people who eat red meat have a higher risk of bowel cancer. The UK Department of Health has issued special dietary advice for this purpose, hoping that those who eat more than 90 grams of red meat a day should reduce their intake to the UK average of 70 grams. This level is equivalent to two standard-sized beef burgers and one lamb chop or three slices of ham in British recipes. The improper diet is the cause of intestinal cancer The Chinese doctors also expressed their views on the claim that excessive intake of “iron” can cause cancer. Although there are no similar clinical statistics, the relationship between colorectal cancer and diet is indeed very close. Nowadays, with good living conditions, people consume more meat. The animal protein and animal fat content of meat is high, which is not easy to digest and the residue is not conducive to excretion and stays in the intestinal canal for too long, thus making the carcinogenic substances in food stimulate the intestinal mucosa for a long time and increase the risk of cancer. Therefore, from this point of view, even if the iron content in meat food is not high, it is not easy to eat more. However, it should be reminded that the amount of iron in the human body is not much, it only accounts for 0.004% of body weight, supporting the health of the human body. As long as the diet is reasonable, foods containing iron should be eaten. How to prevent bowel cancer? If bowel cancer can be prevented by “eating”, can we also prevent it by “eating”? Dietary fiber is called “nutrition” without nutrition by nutritionists. Lack of dietary fiber prolongs the residence time of feces in the intestine, causing the intestine to reabsorb waste products and causing carcinogens in feces to irritate the intestinal wall for a long time. Fiber helps promote intestinal peristalsis, cleanses the intestinal tract of garbage and waste, and reduces the residence time of intestinal carcinogens, thus reducing the risk of colorectal cancer. The American Cancer Society recommends 30 to 40 grams of dietary fiber per person per day. How many grams of fresh fruits and vegetables contain 30 grams of dietary fiber? About the same as 10 apples, 19 bananas, 4 pounds of celery or 6 tomatoes. Obviously, it is generally difficult to achieve such an intake. However, eating more fiber-rich foods, even if they do not reach the standard amount, will play an important role in colorectal cancer prevention. In addition, miscellaneous foods such as corn, millet, barley, wheat bark and wheat flour are high in fiber, and vegetables such as carrots, string beans, peas and potatoes are also high energy foods with fiber. Sweet potatoes are known as the champion of anti-cancer food for this reason. Therefore, it is important to eat more potatoes, fish and soy products, especially grains and cereals, all of which are good for preventing intestinal cancer.