With the development of the times, people's lives are getting better and better, but they get various diseases because they don't pay attention to the problems of food, clothing, housing and transportation, and colorectal cancer is one of them. Many people want to know why they suffer from colorectal cancer, so what causes colorectal cancer? The following are the causes of colorectal cancer.

(1) Dietary factors

It is generally believed that animal protein, high fat and low fiber diet are the causes of colorectal tumors. Eating more fat leads to the increase of bile secretion, followed by the increase of cholic acid decomposition products and the increase of enzyme activity of anaerobic bacteria in the intestine, leading to the increase of carcinogen formation in the intestine and the occurrence of colorectal tumors.

(2) Parasitic diseases

According to the data of China, there are 10.8% 14.5% of advanced schistosomiasis complicated with intestinal cancer, and 12.5% of Egyptian colorectal tumors complicated with schistosomiasis mansoni, which is one of the causes of colorectal tumors.

(3) Abnormal diseases of large intestine

It is estimated that 3% and 5% of ulcerative colitis have a history of colorectal cancer, and within 20 years, 12.5% will become cancerous. In 30 years, 40% people think that 15% 40% colon cancer originated from multiple polyps of colon, and its precancerous course is 5 20 years.

(4) Genetic factors

The total risk of colorectal cancer is 1/50 in the general population, and the risk of cancer in the first generation relatives of patients is tripled to117. If two of the first generation relatives have cancer, the risk rises to 1/6. This family inheritance is more common in colon cancer than rectal cancer.

So how to prevent intestinal cancer?

1, adjust the diet. The occurrence of intestinal cancer is related to frequent intake of high-protein foods and foods containing chemical carcinogens. Therefore, it is necessary to reduce the intake of red meat such as beef, mutton and pork in daily life. At the same time, reduce the consumption of meat products that have been cured, smoked and treated with chemical preservatives. These foods may contain a lot of heterocyclic amines and polycyclic aromatic hydrocarbons, which may increase the risk of intestinal cancer. It is recommended to eat more coarse grains, fresh vegetables and fruits.

2. Exercise actively. Excessive body weight or body fat will increase the level of insulin in blood, promote cell growth and inhibit cell apoptosis, thus increasing the risk of intestinal cancer. Exercise can not only reduce body fat, but also accelerate intestinal peristalsis, reduce the retention time of feces in the intestine, and reduce the adverse stimulation of toxins in feces on intestinal mucosa, thus reducing the occurrence of intestinal cancer to a certain extent.

3. Quit smoking and drinking. Long-term smoking and drinking are risk factors for intestinal cancer. The longer you smoke, the more you smoke every day, the younger you start smoking, and the greater your chances of getting sick, especially in adolescence. If drinking and smoking have a synergistic effect, the risk of cancer is greater. Therefore, getting rid of bad habits such as alcohol and tobacco is helpful to prevent intestinal cancer.

After reading the causes and prevention methods of colorectal cancer summarized above, I think readers have some understanding of the causes and prevention methods of colorectal cancer. In addition to genetic factors, other factors can still be solved by manpower. In terms of diet, a healthy and hygienic diet will not have the chance of developing colorectal cancer.