High intake of sugar increases the risk of Crohn's Disease, and ulcerative colitis. Sugar can cause changes frequently found in person with gastric or duodenal ulcers. Sugar can cause arthritis. Sugar can cause asthma. Sugar can cause gallstones.
Sugar can cause heart disease.
Sugar can cause appendicitis. Sugar can cause multiple sclerosis. Sugar can cause hemorrhoids. Sugar can cause varicose veins. Sugar can elevate glucose and insulin responses in oral contraceptive users.