Causes & Triggers

Although there has been a lot of research, we still don’t really know what causes Crohn’s or UC. However, over the past few years major advances have been made, particularly in genetics.

Researchers now believe that both CD and UC are caused by a combination of factors



Viruses, bacteria, diet, smoking and stress have all been suggested as environmental triggers, but there is no definite evidence that any one of these is the cause of IBD.