It has been known to help Colitis for a long time.
Chron's is different and smoking cigs can cause someone with Chron's to flair really bad at times.
if they look at ppl who smoke and have crohn, the ones who smoke have more surgeries and a worse disease, but they are not sure if it is related, since some tests show a really small link
In UC the opposite has been shown, smoking improves UC, cause nicotine promotes tight junctions in the intestine (connections between cells) which improves the intestine by reducing permeability
Good read if you have Chron's and smoke.
Impact of smoking - Crohn's Disease Forum - Support group and forum for Crohn's Disease, Ulcerative Colitis, and other IBD
I'm on Humira right now and it is working but the last week (been off cigs for 17 days now) I have really started to feel a lot better.
My GI doc was glad I quit and I even told him about
vaping.
I do plan to lower my nic level over the next year.
I started having a lot of problems with Chron's back in 2005.