In recent years, the incidence of colon cancer has been showing an upward trend, and in the past, mostly occurred after 60 years old, but now around 40 years old has become the high incidence of colon cancer, the age of onset of young obvious, experts said, young and middle-aged people suffering from colon cancer is mostly related to the structure of the diet, before the people to coarse grains, vegetables, and at present, the diet is becoming more and more refined, resulting in the occurrence of colon cancer. Prevention of colon cancer, first of all to control the mouth Not long ago, the World Health Organization to the processed meat products as a class I carcinogen, and its main will lead to the occurrence of colon cancer, experts, in the latest published in the journal Nature Communcation 1 article, Western countries and African volunteers and volunteers to exchange each other the way of eating 2 weeks later, the 2 groups of people suffering from intestinal cancer risk The risk factors for bowel cancer in the two groups changed dramatically, with the expression of tumor markers weakening in the Western volunteers and significantly upregulating in the African volunteers after two weeks on an American high-fat, high-protein diet. Therefore, experts suggest that to prevent colon cancer, keep your mouth shut and eat less or no food rich in saturated fat and cholesterol, including: large fish and meat, oil, animal offal, egg yolks, etc.; vegetable oils, including peanut oil, soybean oil, canola oil, etc., are limited to about 20 to 30 grams per person per day, or about 2 to 3 tablespoons. Do not eat or eat less fried, pan-fried, barbecued food. In addition, it is recommended to increase the intake of dietary fiber, eat more dietary fiber-rich foods: such as taro, soybeans and their products, fresh vegetables and fruits, algae, etc.; in maintaining the amount of staple food remains unchanged under the premise of part of the coarse grains instead of fine grains. To supplement vitamins and trace elements, moderate consumption of walnuts, peanuts, dairy products, lean meat, seafood, etc., to supplement vitamin E; pay attention to the intake of malt, fish, mushrooms and other food rich in trace elements selenium; moderate consumption of food containing monounsaturated fatty acids, such as olive oil, tuna, etc.. Attention to diet, need to do colonoscopy prevention In addition to diet will lead to the occurrence of colon cancer, heredity, intestinal disease is also one of the main factors that induce colon cancer, therefore, experts pointed out that, to promote a healthy diet is important, when on time health checkups are also indispensable, it is recommended that the population aged 40 years or older, each year, should be screened with a colonoscopy; if there are polyps and other positive findings, then the interval between the review should be shortened; there is a family history of colon cancer, polyps, and other positive findings; there are also a family history of rectal cancer, polyps, and other positive findings, should be shortened. Patients with a family history of colorectal cancer and a history of polyps should be reviewed for colonoscopy earlier and more frequently, and high-risk polyps should be dealt with through endoscopic treatment; patients with blood in the stool, weight loss, and changes in bowel habits in a short period of time, even if they are young patients, should be considered for a comprehensive checkup to rule out external intestinal tumors. Change of bowel habit should be alert to bowel cancer Experts remind that there are often no special symptoms in the early stage of bowel cancer. After its development, it mainly manifests as increased frequency of defecation, diarrhea, constipation, anemia, decreased appetite, blood, pus or mucus in feces. Abdominal pain is also one of the early symptoms, which is often persistent hidden pain with inaccurate localization, or only abdominal discomfort or abdominal distension, and abdominal pain is aggravated or paroxysmal colic when intestinal obstruction occurs. Frequent bowel movements, change in bowel habits, a feeling of falling in the anus before defecation, a feeling of urgency and heaviness, and a feeling of incomplete defecation; the surface of the stool carries blood and mucus, and even pus and blood stools. If the above two symptoms last for 2 weeks and you are over 40 years old, it is necessary to go to the hospital for colonoscopy, so as to detect and exclude the possibility of rectal cancer at an early stage.