What's the chance of colon cancer in males under 40?

Depends: Depends on familial risks of colon cancer and any inherited disorders linked to the possibility of colon cancer such as polyposis conditions. Generally, risks are higher after age 50. A cleveland clinic site states that less than 2% of colon cancer occurs under age 40.

Rare: It is commonly a disease of 60's and older, but it does not respect age at all, and I have seen many males and females well under 40 with colon ca, so don't think that age protects you in any way. If you have any symptoms, i urge you to get checked. However, don't worry unnecessarily, because as i said, it is rare!

Not common: Colon cancer is not common in men under 40 except in patients with a strong family history and those with inherited colon cancer syndromes such as lynch syndrome.