Theoretically speaking, everyone may suffer from cancer, but medical investigation confirms that people with the following 9 conditions are more likely to suffer from cancer and should be prevented in time. 1. Drinking hot tea often. Drinking high temperature (above 70℃) tea will not only burn the esophagus and form chronic ulcers, but also the tannin in tea can be deposited in the damaged area and stimulate the injured esophageal epithelial cells, which will cause chronic ulcers to persist and lead to cancer. 2. Staying up late at night is the most vigorous period of cell division. If there is not enough sleep at night, the immunity of human body will be reduced and the mutated cells will not be easily removed in time, which may lead to the occurrence of cancer. Urine generally contains one or several carcinogenic substances, all of which can stimulate bladder epithelium to make it cancerous. There are more harmful substances in feces, such as hydrogen sulfide, fecal odorant, cholesterol metabolites and secondary bile acids and other carcinogens, which can also lead to cancer if they often stimulate intestinal mucosa. 4. Allergic body People who have asthma and allergy to certain drugs or chemical agents are more prone to cancer than those without allergy. Women with a history of allergies have a 30% higher chance of developing breast cancer than normal people; men with a history of allergies have a 40% higher chance of developing prostate cancer than normal people. 5.Low serum cholesterol Some experts in the United States believe that people with low serum cholesterol, with serum cholesterol below 110mg/dl, have more than 3 times higher risk of colon cancer than normal people. Experts from Harvard University found that people who eat meat such as pork, beef and lamb as their main diet every day have 2.5 times higher risk of bowel cancer than those who only eat a small amount of meat a few times a month; the risk of pancreatic cancer also increases with the increase in the amount of meat consumed. Children of cancer patients The risk of cancer in the offspring of cancer patients is significantly higher than that of the general population. 8.Cancer in one of the spouses The phenomenon of both spouses getting cancer at the same time or one after another is gradually increasing, which is called “cancer in spouses”. Experts believe that the same poor lifestyle is the root cause. Vitamin A and carotene deficiencies increase the risk of lung cancer by 3 times; vitamin C deficiency increases the risk of esophageal cancer and stomach cancer by 2 times and 3.5 times respectively; the incidence of lip cancer, oral cancer, cervical cancer, stomach cancer, intestinal cancer and lung cancer are all increased among people with vitamin E deficiency.