In-law recently died at age 40 of colon cancer. I am pretty sure there is a strong genetic link to colon cancer deaths in this age group. This person has 7 brothers and sisters. One sibling is nurse and one is pharmacist. I can't help wondering if anyone has warned them they need to be checked. I was thinking of saying something to spouse of deceased, especially about their children. Most likely they already have been warned by doctor on case but you never know.