18/02/2026
Fructose malabsorption occurs when the small intestine fails to fully absorb this sugar.
Some people can tolerate more fructose than others, so symptom severity can differ depending on the amount of fructose consumed.
Symptoms include bloating, diarrhoea, constipation, nausea, or abdominal cramps. People with Coeliac disease and IBS are at a higher risk of suffering from fructose intolerance.
The Fructose Malabsorption test can be done in clinic or the test can be perfomed at home using a home testing kit.
https://gastrolife.ie/terminology/fructose-malabsorption-test/