Dont know yet: We don't really know what is the main causative reason this condition happens. We just know it is immune mediate, and we know what happens in the disease. But what exactly starts it and why? We don't know.
Answered 11/2/2012
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Complex: There are potentially hundreds of genes that all contribute small amounts the the susceptibility to ulcerative colitis. Additionally there are environmental factors, including possibly the population of bacteria that live in your gut. We know that smoking may be protective against uc. This is not an endorsement to smoke however.The bottom line is that we still don't fully understand all the causes.
Answered 10/9/2017
4.2k views
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