The exact cause of ulcerative colitis is still not well understood. But scientists do know that some type of trigger (such as an infection or a medication) can set off ulcerative colitis in people who have an inherited risk of developing the condition.
Could you be at risk? Although anyone can develop ulcerative colitis, there are a few things that can make your risk greater than average:
Smokers are at a lower risk of ulcerative colitis. But because of the negative health effects of smoking, it's not recommended as a way to reduce your risk of ulcerative colitis.
If you're concerned about your risk of ulcerative colitis, speak with your doctor.
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