My dad recently had a test and had the FAP gene which produces things called polyps (I think) which can develop into cancer. This means I have a 50% chance of inheriting this gene, so what exactly happens if I do have it because i'm getting quite worried. I'm booked into the doctors this thursday to have a blood test and to get the results can take 3-5 months. P.S I'm 18 years old.
Any help/advice appreciated :)