My uncle was just diagnosed with colon cancer, and I told my dad that he should get checked. He said he didn't have to because it wasn't hereditary. I have heard that it was. Does anyone know if it is or not?

I have hereditary Colon Cancer, it is called Gardner's syndrome. It is usually passed from father to child, never documented to be passed by the mother. Luckily mine was caught in time. Chemo has shrank a 7 inch tumor that was pressing on my spine to the size of a penny. Tell you dad to get checked!!

naw i dont think so. My dad got colon cancer hes fine by the way he beat it out and none of my family has gotton it b4

It can be. If possible, see a genetic counselor. They can do specific tests for things like Lynch's syndrome and AFAP.

I cover the basics of genetic counseling, along with my experiences, Here:
Rotorhead's blog: Genetic counseling

I hope this helps.
Aloha,
RH