Lifestyle changes may keep Crohn's at bay. Smoking increases the risk of developing Crohn's disease, and those with a family history of Crohn's should consider quitting smoking to reduce the risk. 

Using certain medications such as antibiotics and nonsteroidal anti-inflammatory drugs (NSAIDs) for long periods of time can weaken the GI tract and increase the risk of inflammatory bowel disease. Children who undergo an appendectomy early in life may be at a higher risk for developing Crohn's disease. While there is no clear evidence as to whether diet has any impact on developing Crohn's, certain foods may aggravate symptoms and cause flare-ups. 

If you think you have Crohn's disease, avoid foods that are known to cause gas. The Mayo Clinic recommends avoiding: 

• beans;
• cabbage; and
• spicy food. 

Dairy products may cause diarrhea or gas in those who are lactose intolerant, so dairy should be limited. Fiber can be a problem for Crohn's sufferers, especially fiber found in nuts, seeds and popcorn.