![]() Meanwhile, the incidence rate increased by 2% per year in adults younger than 55. It is important to note that while colorectal cancer is still diagnosed most commonly in older adults, the incidence rate for colorectal cancer declined by about 3.6% per year in adults 55 and older, based on the latest statistics. Adults 65 and older who are diagnosed with colorectal cancer face unique challenges, specifically with regard to cancer treatment. For rectal cancer, it is age 63 for both men and women. For colon cancer, the average age at the time of diagnosis for men is 68 and for women is 72. Colorectal cancer can occur in young adults and teenagers, but the majority of colorectal cancers occur in people older than 50. The risk of colorectal cancer increases as people get older. However, the following factors may raise a person’s risk of developing colorectal cancer:Īge. More often, the cause of colorectal cancer is not known. Another 10% to 15% of colorectal cancers are diagnosed in people with a family history of colon or rectal cancer but not a known inherited condition (see below). Inherited colorectal cancers are less common (about 5% to 10%) and occur when gene mutations, or changes, are passed within a family from 1 generation to the next (see below). Generally, most colorectal cancers (about 95%) are considered sporadic, meaning the genetic changes develop by chance after a person is born, so there is no risk of passing these genetic changes on to one’s children. Knowing your risk factors and talking about them with your doctor may help you make more informed lifestyle and health care choices.Ī person with an average risk of colorectal cancer has about a 5% chance of developing colorectal cancer overall. Some people with several risk factors never develop cancer, while others with no known risk factors do. Although risk factors often influence the development of cancer, most do not directly cause cancer. Use the menu to see other pages.Ī risk factor is anything that increases a person’s chance of developing cancer. ON THIS PAGE: You will find out more about the factors that increase the chance of developing colorectal cancer. ![]()
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