Cases of younger people getting cancer — folks under the age of 50 — have been growing. Someone born in 1990 is now four times more likely to get rectal cancer, and two times more likely to get colon cancer than someone born in 1950.

Why? And, what is it like to be a doctor in metro Detroit fielding these cases?

Dr. Thomas Kelly is a gastroenterologist at the Karmanos Cancer Institute. He spoke with The Metro's Robyn Vincent.