Colorectal cancer is a common malignant tumor, including colon cancer and rectal cancer. Ninety percent of colorectal cancer can be cured by early detection, but the early symptoms of colorectal cancer are mostly not obvious, so it is very easy to be missed or misdiagnosed. How to prevent colorectal cancer, the following information you need to know Every 5 minutes, 1 person dies of colorectal cancer In recent years, the incidence of colorectal cancer has been increasing year by year. According to the data, one person dies of colorectal cancer every five minutes in China, and most of them are found in the middle and late stages. What is more frightening is that the trend of bowel cancer in China is particularly young. The average age of onset of bowel cancer in America is 69.8 years old, but in China it is 48.3 years old, 20 years younger, and many of them are middle-aged people aged 30~40. Three major early symptoms of colorectal cancer 1. Blood in stool: Many patients who have blood in stool think that it is caused by small hemorrhoids and do not pay attention to it. 2, black stool: In recent years, influenced by the trend of detoxification and skin care, many people abuse laxatives, thus triggering a significant increase in colon black stool disease, in fact, the common explanation is that the colon becomes black, the disease is accompanied by adenomatous polyps and intestinal cancer rate of up to 22%-55%. 3, diarrhea: the occurrence of sustained changes in stool habits, including sudden constipation, diarrhea or alternating between the two, as well as a significant increase in the number of stools, are some of the symptoms of rectal cancer. Early detection of colorectal cancer is 90% curable. However, so far, only about 20% of patients can achieve early detection. Experts say that these early symptoms of colorectal cancer are very similar to hemorrhoids, so many people will not realize it, and by the time of discovery, most patients have already reached the middle and late stage, which is an important reason for the high mortality rate of bowel cancer. Six groups of people are closely related to colorectal cancer and are high-risk groups Firstly, those who have digestive symptoms such as blood in stool, mucus stool and abdominal pain over 40 years old. Secondly, those who have a history of colorectal cancer. Third, immediate family members with a family history of colorectal cancer. Fourth, those who have a history of pelvic radiotherapy. Fifth, immediate family members with a family history of colorectal polyps. Sixth, those with precancerous colorectal lesions, such as patients with colorectal adenoma, ulcerative colitis, Crohn’s disease and schistosomiasis. For these six high-risk groups, experts suggest that from the age of 40, every 3 to 5 years, it is important to have a colorectal cancer screening. For those with family history, it is recommended to visit a regular oncology center for treatment. For non-high-risk groups, it is recommended to undergo colorectal cancer screening every 5 to 10 years from the age of 50.