Irritable Bowel Syndrome Message Boards | Fructose malabsorption test

There is a breath test for fructose malabsorption. However, it is not readily available. There is a good description of it in this article . The difficulty with the breath test is that a negative result does not mean you are not a fructose malabsorber.

The most reliable way to find out is to reduce your fructose intake and see if your IBS symptoms decrease or return when you increase you fructose intake. This can be difficult to do especially for those people who enjoy sweet foods. Fructose is the sweetness known natural sugar. About twice as sweet as white sugar. We can crave it

It is important thing to note that everyone suffers from fructose malabsorption after eating large amounts of fructose. About 80% of people can handle more than 50 grams in a single serving. About 10% of people experience IBS like symptoms (gas, bloating, D, etc) when they eat between 5 -10 grams of fructose. There is about 5 grams (1 tsp) of fructose in a 12 oz can of cola.

When you are stable if you can eat 1/2 an apples or pear or 100 grams of papaya then your GI system can handle 5 grams of fructose. There are more details about how to calculate this in this message

Good Luck

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STABLE: ♂, IBS-D 50+ years - Science of IBS

The FODMAP Approach to Managing IBS Symptoms
Evidence-based Dietary Management of Functional GI Symptoms: The FODMAP Approach
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