Beware: Five major risk factors for colorectal cancer

With the improvement of people's living standards and changes in living habits, the number of colorectal cancer patients in China has been increasing year by year. What are the causes of colorectal cancer ? Here are some risk factors for colorectal cancer.

Generally, risk factors for colorectal cancer include:

1) Age: As age increases, the time that various pathogenic factors stimulate the large intestine mucosa also increases. Most colorectal cancer patients develop the disease after the age of 50.

2) Family history: If a person's first-degree family member, such as a parent, has had colorectal cancer, his risk of developing colorectal cancer in his lifetime is 8 times higher than that of the general population [If one of your direct family members (parents, siblings or children) develops colorectal cancer before the age of 50, or if two or more people in your paternal or maternal family have colorectal cancer, then you have a family history of colorectal cancer]. About 1/4 of new patients have a family history of colorectal cancer.

3) History of intestinal inflammatory diseases: Certain intestinal diseases such as Crohn's disease or ulcerative colitis may increase the chance of inducing intestinal cancer. Their risk of inducing intestinal cancer is 30 times that of ordinary people.

4) History of colorectal polyps: Most colorectal cancers develop from small precancerous lesions, which are called polyps. Among them, villous adenomatous polyps are more likely to induce colorectal cancer, with a chance of malignant transformation of about 25%; tubular adenomatous polyps have a malignant transformation rate of 1-5%.

5) Genetic background: Familial adenomatous polyposis and hereditary non-polyposis colorectal cancer are both caused by mutations in the corresponding genes. These patients not only have a significantly increased risk of developing colorectal cancer, but also develop the disease at a younger age.

The above is an introduction to the five major risk factors for colorectal cancer. I believe everyone has some understanding of the causes of colorectal cancer. For more questions about the causes of colorectal cancer, you can consult our online experts.

For more information, please visit the colorectal cancer topic at http://www..com.cn/zhongliu/ca/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.