(HealthDay News) -- Inflammatory bowel disease (IBD) is a chronic illness of the digestive tract. There are two main types: Crohn's disease and ulcerative colitis, the U.S. Department of Health and Human Services says.

The agency offers these suggestions to help keep IBD under control:

• Take certain nutritional supplements. Discuss options with your doctor.
• Reduce the amount of dairy products in your diet.
• Eat a low-fat diet recommended by your doctor.
• Stay away from foods high in undigestible fiber, as well as highly seasoned foods.
• Eat smaller meals more frequently throughout the day.