Fructose consumption may play a significant role in irritable bowel syndrome (IBS) and other gastrointestinal illnesses, according to a paper presented at a recent meeting of the American College of Gastroenterology.

Researchers at the University of Iowa tested 80 individuals with IBS for fructose intolerance and found 30 were fructose intolerant. These participants were instructed to follow a fructose-free diet for one year. At the end of the year, 26 of the patients were available for a follow-up visit.

Results indicated symptoms improved significantly in the 14 patients who strictly complied with the diet. Eleven individuals noted a strong correlation with occasionally not following the diet and a return of symptoms. Those who did not follow the diet did not report an improvement in symptoms.

what is fructose?

Fructose is a monosaccharide, or single sugar, that has the same chemical formula as glucose but a different molecular structure. Mild fructose intolerance is not uncommon, and its symptoms of stomach and intestinal cramps can become more noticeable during exercise. Severe symptoms include vomiting, weakness, dizziness, hunger, headaches, jaundice, and abnormal sweating. Drinking sweetened soda, fruit juices, and other high-fructose beverages is most likely to bring on symptoms.