Fructose Intolerance: Symptoms, Diagnosis, Diet

Those who do not tolerate fructose well will find that it can be found in quite a few foods. What triggers the discomfort, what helps

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Fructose intolerance - briefly explained

  • The common fructose intolerance is correctly fructose malabsorption. This means that the body can only take up (absorb) a limited amount at one time in the intestine.
  • The fructose intolerance typically leads to gas / bloating, abdominal pain and diarrhea if you have consumed too much of the sugar.
  • The doctor can determine the intolerance using a breath test.
  • Those who are sensitive to fructose have to find the individual threshold from which they can consume fruit, juice and sweets without problems. A completely fructose-free diet is not recommended.
  • Hereditary fructose intolerance occurs very rarely, in which affected people can absorb fructose through the intestine, but cannot break it down, they are intolerant to fructose and have to avoid it completely. The disease is serious and mostly affects babies.

This post is primarily concerned with the common fructose malabsorption.

Intolerance, malabsorption, maldigestion, intolerance, allergy: what the terms mean

Food intolerance is a slang term used to express that, for example, you do not tolerate fructose well if you consume it.

If you are intolerant to food, the body cannot break down a certain substance properly because it lacks the necessary enzyme. The substance accumulates in the organism. Example: hereditary fructose intolerance.

The much more common fructose intolerance, in which people can only absorb limited amounts of fructose at one time in the intestine, is malabsorption. The fructose is metabolized normally.

Maldigestion means: food components cannot or only insufficiently be broken down and absorbed by the body. Here too, an enzyme deficiency, for example in the pancreas, often plays a role.

A food allergy is an immune system reaction to certain ingredients in food.