22 yr old I am are colon cancer a rare sign of colon cancer? Its not listed as the signs of colon cancer im scared I may have it because of noappetite

Rarely. No appetite (anorexia) is a rare and late presentation of colon cancer. Your age is another reason you are unlikely to have colon cancer. Rectal bleeding, change in stools or abdominal pain/bloating are more common symptoms. Anorexia can indicate other problems so i recommend you see your doctor, especially if it is making you lose weight!
Go to your doctor. Please check out www.Michaelsmission.Org it is a very informative website about colorectal cancer.