Theoretically speaking, everyone may suffer from cancer, but the long-term research and findings of American scientists and medical doctors confirm that the following 10 cases of people, the probability of cancer, with the possibility of greater, therefore, should be prevented early. The following are recorded: 1. Drinking very hot and strong tea every day: Drinking high temperature (above 70℃) and strong tea often not only scald the esophagus to form chronic ulcers, but also the tannin in tea can be deposited in the damaged area to stimulate the injured esophageal epithelial cells, resulting in chronic ulcers that do not heal and lead to cancer. 2, often work late: cancer cells are formed by mutation in the process of normal 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. Those who stay up late at night often smoke and drink coffee to refresh themselves, which is also easy to make more carcinogens enter the body. 3. Those who often hold their urine and stool: urine generally contains one or several carcinogenic substances, which can stimulate the bladder epithelium to make it become 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. Those who are allergic: American scientists surveyed nearly 40,000 people, who have asthma and are allergic to certain drugs or chemical agents are more prone to cancer than those without allergies. 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 the incidence of colon cancer is higher in those with low serum cholesterol. People with serum cholesterol lower than 110mg/dl have more than 3 times higher risk of colon cancer than normal people. 6.Life preference for meat: Experts from Harvard University found that the proportion of people who eat mainly meat from pigs, cows and lambs every day is 2.5 times higher 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. 7.Children of cancer patients: Oncogenetic studies believe that the occurrence of human cancer is highly related to genetic factors, and 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: According to the data, there is a gradual increase in the phenomenon that both spouses suffer from cancer at the same time or successively, which is called “cancer in spouses”. Experts believe that the same poor lifestyle is the root cause of the problem. 9.Patients suffering from hypertension: Although it cannot directly lead to cancer, the two diseases have a common mechanism of occurrence. Obesity, alcoholism, smoking and excessive salt consumption can both raise blood pressure and induce cancer. Therefore, active prevention and treatment of hypertension can also reduce the risk of cancer. 10.It belongs to vitamin deficiency: Swiss experts believe that people who have less protective vitamins in their bodies are vulnerable to cancer invasion. Vitamin A and beta carotene deficiency increases the risk of lung cancer by 3 times; vitamin C deficiency increases the risk of esophageal cancer and gastric cancer by 2 times and 3.5 times respectively; the incidence of lip cancer, oral cancer, skin cancer, cervical cancer, gastric cancer, intestinal cancer and lung cancer are increased in people with vitamin E deficiency.