Low residue diets are often prescribed in Inflammatory Bowel Disease to allow the intestines time to rest. Decreasing foods that cause high amounts of residue in the intestines will decrease the stool volume and transit time. Less stool and slower moving stool means less work for the inflamed GI tract.
For adults a low residue plan includes less than 10-15 grams of fiber. For children low residue diets generally have less than 7-10 grams of fiber. Whole grains are replaced with...

Seven Common Symptoms of Ulcerative Colitis
Seven Nutrition Tips for Ulcerative Colitis Patients
Quiz: Do You Know What Your Stool is Telling You?
Six Risk Factors for Ulcerative Colitis