What body system is affected by Crohn’s disease?

Sassy, about the same as everyone else; I've had it 50 of my 60 years; can sometimes cause an obstruction, but as long as you get medical attention ASAP, it's not fatal

Sassy, I've cared for people in hospital with Chrohns, ulcerative colitis, IBD etc and they're well into their 70 and 80's.

I have Crohn's. Truly awful disease!

Sharon, I agree. It occurs in the digestive system but is due to "immunity" system. Dysregulated Immune Response

it is classed as a immunodeficiency. the question is incorrect and misleading.

It is awful. It’s not, per se, fatal. Deaths due to C are mostly complications from surgery, obstructions or perforations (I’ve had both), and suicide. “Autoimmune” still just means “we don’t know.” All the biologic/chemo treatments can help, but cause other problems (older folks on this thread have probably been a guinea pig for most since the old high-dose prednisone/Imuran days). Best plan: learn to laugh. Talk openly and don’t be embarrassed. Help teach the public. Run from any doctor that says it’s your fault. Have fun & have good friends. Best of luck to you!

Sharon, the condition is an auto-immune disorder, not immunodeficiency. Immunodeficiency is a weakened immune system.

Katt, don't be so snippy. we all make mistakes

Sharon, reread the question; it asks "WHAT does Crohn's affect?", not causes it. Silly...

little b, What is niyg5…

SnoopyFan, My daughter has crowns as well. She’s doing good now.

Max, It can be fatal.

I've niyg5

Where’s the men’s room!

Sassy, Full life , if properly treated.

TestyAlien3443, The cause is unknown, though it is a suspected to be a auto immune response.

Sassy, around the same as most unless you hit complications

What is the life expectancy of someone with this disease.