Chrons runs in my family..my Aunt is practically dying from it. She can't eat and not be near a toilet...it's that simple. She weighs next to nothing and has had it since age 35. She is now 50.
My father was struck with it in his 50s, had to have a piece of intestine removed. He hates milk, never drank it. I'll never forget the onset, sudden, violent and crippling, seeing him hauled off on a stretcher, had never seen him sick before ! Has been mostly OK since (now over 80), occasional trouble, but he never again felt he was totally in control - always the fear of sudden violent attacks so it limited many travel desires.