1.Excessive smoking The risk of cancer is 7-11 times higher for smokers than for non-smokers. More than 30% of cancers such as lung cancer, laryngeal cancer and esophageal cancer are closely related to smoking. 2. Too little exercise According to the expert group, a sedentary lifestyle increases the risk of certain cancers. Studies have shown that regular and continuous physical activity can prevent cancer in certain areas, such as colon cancer. 3. Excessive alcohol consumption Whether it is beverages containing alcohol, or beer, wine and spirits, the risk of developing oral cancer, throat and pharyngeal cancer increases significantly with the increase in intake. If you must drink, men should not exceed 2 servings per day. 4, excessive intake of sugar Sugary drinks provide energy, but it is very easy to make people drink too much without realizing it, leading to obesity. 5.Less fruits and vegetables Fruits and vegetables may reduce the chance of many cancers such as throat cancer, laryngeal cancer and esophageal cancer. You should eat at least 5 portions (at least 400 grams) of different kinds of vegetables and fruits daily, preferably including different colors such as red, green, yellow and purple. 6, addicted to red meat Diets with too much red meat may lead to more pancreatic cancer, breast cancer, prostate cancer, etc. The weekly intake should be less than 500 grams, while eating as few processed meat products as possible. 7. Excess salt Salt and salt-cured food will increase the incidence of stomach cancer. The total daily salt intake should be less than 6 grams.