There's no firm evidence that what you eat actually causes inflammatory bowel disease. But certain foods and beverages can aggravate your signs and symptoms, especially during a flare-up.
It can be helpful to keep a food diary to track what you're eating, as well as how you feel. If you discover that some foods are causing your symptoms to flare, you can try eliminating them.
• Limit dairy products: Many people with inflammatory bowel disease find that problems such as diarrhea, abdominal pain and gas improve by limiting or eliminating dairy products
• Eat small meals: You may find that you feel better eating five or six small meals a day rather than two or three larger ones.
• Drink plenty of liquids: Try to drink plenty of fluids daily. Water is best. Alcohol and beverages that contain caffeine stimulate your intestines and can make diarrhea worse.
• Consider multivitamins: Because Crohn's disease can interfere with your ability to absorb nutrients and because your diet may be limited, multivitamin and mineral supplements are often helpful.
• Talk to a dietitian: If you begin to lose weight or your diet has become very limited, talk to a registered dietitian.
Courtesy: Mayo Clinic