This unhealthy diet is also one of the most critical causes of gastric cancer. With the improvement of living standards, many families eat chicken, duck and fish almost every meal, and rarely see vegetables and fruits on the table. But always eating like that will do harm to human health, cause a lot of endotoxin and waste in the stomach, and increase the risk of carcinogens.

2. Intestinal adenoma polyp

All kinds of diseases do not happen once or twice inadvertently, and it must be a difficult whole process in the middle. If intestinal adenomatous polyp is found in the gastrointestinal tract, we need to attach great importance to it, because this vegetation usually has a high risk of transforming into intestinal cancer, which is also a precancerous lesion of intestinal cancer.

3. Less activity

Because of work, some groups have to work at their desks all day, which will reduce the intensity of exercise. We need to pay attention to this situation. This unhealthy lifestyle will increase the probability of gastric cancer.

Second, what abnormal conditions may be a precursor to rectal cancer? 1, black stool.

If you find that the color of defecation has turned black recently, you need to find out whether you have taken the corresponding medicine or eaten some dark ingredients recently. In addition to removing this factor, we need to be vigilant, because after the occurrence of black manure, it may be caused by symptoms. Generally speaking, the volume of malignant tumor will expand with the rapid development of the disease. When this enlarged malignant tumor is squeezed to a certain extent, it will cause cracking and bleeding, then blood night will be closely combined with excrement, and its color will change accordingly, mainly manifested as black feces. After this happens, you need to go to the hospital for physical examination and treatment immediately.

2. Mucus will appear

It is also an abnormal disease if there is a lot of mucus in the excrement during defecation. If the human body is healthier, defecation will be smoother. The digestive tract is not reduced, and it is impossible to cause too much mucus. If this happens, it is mostly related to the development trend that malignant tumors endanger the natural environment of intestinal flora. After gastrointestinal dysfunction, the ability of digestion and absorption will also decrease, which will not only lead to diarrhea, but also cause mucus stool, which is also a common change after tumor cells occur in colon.