Sugar can promote tooth decay. Sugar can contribute to weight gain and obesity. High intake of sugar increases the risk of Crohn's disease and ulcerative colitis. Sugar can cause a raw, inflamed intestinal tract in persons with gastric or duodenal ulcers. Sugar can cause arthritis.
Sugar can cause asthma.
Sugar can lead to the formation of gallstones. Sugar can lead to the formation of kidney stones. Sugar can cause ischemic heart disease. Sugar can cause appendicitis. Sugar can exacerbate the symptoms of multiple sclerosis.