1. Non-smoking: The risk of developing smoking-related cancers is closely related to how long a person has smoked and how much he or she has smoked. The most common cancer associated with smoking is lung cancer, the leading killer of cancer deaths among men and women in the United States. Staying away from tobacco can reduce the risk of lung cancer and other cancers no matter how long you have smoked before. Eat more fruits and vegetables: The American Cancer Society recommends eating at least five fruits and vegetables a day because they contain vitamins, minerals, antioxidants and other substances that can reduce the risk of cancer. In recent years, some studies have pointed out that the relationship between the consumption of fruits and vegetables and the reduction of the risk of cancer is not as strong as one might think, but most experts still firmly believe that a plant-based diet is the main way to keep your body healthy. 3. Limit fat intake: Studies have shown that a high-fat diet or excessive intake of specific types of fat is strongly associated with colon cancer and postmenopausal breast cancer. The reason for this may be due to the fact that a high-fat diet means high energy and an increased incidence of obesity. More and more research is needed to further understand which types of fats should be avoided and how they affect cancer development. Current guidelines recommend a daily fat intake of 20 to 30 percent of energy needs, with most fats coming from polyunsaturated fatty acids and monounsaturated fatty acids, such as fish, nuts and vegetable oils. 4. Regular exercise: A growing body of evidence suggests that those who are physically active have a much lower risk of developing some cancers than those who prefer to be sedentary. Forty-five to 60 minutes of moderate exercise on most days of the week can give you more energy and is thought to reduce the risk of breast and colon cancer. 5. Maintain a healthy weight: Both overweight and obesity may increase the incidence of postmenopausal breast, colon, endometrial, esophageal and kidney cancers. Obesity has been proven to increase the risk of prostate, liver, gallbladder, pancreatic, stomach, ovarian and uterine cancers. Some studies have shown that in the United States, being overweight is a factor in 14 to 20 percent of cancer deaths among adults. Limit alcohol intake: Drinking alcohol can increase the risk of oral, pharyngeal, laryngeal, esophageal, liver, colon and rectal cancers. Women should not drink more than one bottle of alcoholic beverages per day and men should not drink more than two bottles. Avoid Rays: Ultraviolet rays emitted by the sun, radiant heat lamps and commercial tanning machines are the main cause of skin cancer, the most common of all cancers. 8, protect yourself from infections: Virus-induced infections are considered risk factors for several types of cancer. Human papillomavirus is a sexually transmitted disease that is the most common cause of cervical cancer. Chronic hepatitis B virus and hepatitis C can increase the risk of liver cancer, and they are usually transmitted through contaminated blood, injection needles, or unprotected sexual intercourse. Human immunodeficiency virus, the virus that causes AIDS, can also increase the incidence of several types of cancer and is often transmitted through unprotected sexual intercourse or sharing of syringes. 9, cooking don’t close the windows and doors: the current range of effectiveness of the range hood only 45 centimeters below the hood, the rest of the smoke emitted by the amount of toxic fumes is a cigarette thousands of times a person every day in this environment to absorb the toxic fumes than an hour to smoke two packs of cigarettes more. Suggest that housewives are not too superstitious range hoods, reduce high-temperature frying unhealthy way of cooking, more open windows to maintain air circulation in the kitchen.