Expert answer: Age may be closely related to the cause of colorectal cancer

It is understood that in real life, most patients with colorectal cancer are relatively old, and few people suffer from colorectal cancer at a young age. This shows that the cause of colorectal cancer is also related to age. Therefore, the older people are, the more they need to pay attention to preventing colorectal cancer. So what are the causes of colorectal cancer ? Let's ask experts to tell you about the common causes of colorectal cancer.

In general, the common causes of bowel cancer are:

1. 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 develop into cancer, with a malignant transformation rate of about 25% for colorectal cancer, and a malignant transformation rate of tubular adenomatous polyps is 1-5%. Therefore, this is a common cause of colorectal cancer.

2. History of inflammatory bowel diseases: Certain bowel diseases such as Crohn's disease or ulcerative colitis may increase the chance of developing bowel cancer and are also common causes of bowel cancer. Their risk of bowel cancer is 30 times that of ordinary people.

3. Genetic background: Familial adenomatous polyposis and hereditary non-polyposis colorectal cancer are caused by mutations in the corresponding genes. Patients with this type of colorectal cancer not only have a significantly increased risk of developing the disease, but also develop it at a younger age. This is a relatively common cause of colorectal cancer.

The above answers are the common causes of colorectal cancer. I hope it will be helpful to you. If you have any questions about the causes of colorectal cancer, you can consult our online experts, who will answer them in more detail.