Fructose Intolerance with HPU
When fructose causes problems
Fructose is another term for fructose. Half of the household sugar (sucrose) also consists of fructose, the other half of the disaccharide is glucose. Fructose is also often added to soft drinks as a sweetener. The substance is also often found in finished products.
Sugar is basically nothing bad. Each of our body cells needs glucose as an energy source. Fructose is converted into glucose in the liver.
The HPUler can not carry out this conversion however particularly well. Because the zinc mug under HPU also reduces the functionality of aldolase B – the enzyme that converts fructose into glucose in the liver. This can result in a glucose deficiency
(hypoglycaemia) with numerous complaints. At the same time, a high fructose level leads to the release of insulin, which causes the glucose level to drop even further.
Reason for fructose intolerance
If fructose is intolerant, the transporter protein (GLUT-5) for fructose in the small intestine is reduced in its efficiency. This condition can be exacerbated by a hypothyroidism and the absorption of sorbitol. Normally GLUT-5 ensures that fructose is absorbed in the small intestine. If this is not done sufficiently, water accumulates in the small intestine. The small intestine is connected to the large intestine. Fructose can no longer be absorbed into the bloodstream there.
Water and fructose therefore flow into the large intestine. The bacteria living there metabolise fructose into gases that cause flatulence. Excess water can lead to diarrhoea, but also to constipation. The symptoms are similar to those of irritable bowel syndrome.
Fructose intolerance can be caused by a deficiency of the thyroid hormones T3 and T4, since the working speed of the intestinal transporter GLUT-5 depends on the amount of thyroid hormones present in the intestine.
Symptoms of fructose intolerance
The symptoms of a fructose intolerance include:
- abdominal cramps
- Pulpy stools, but also constipation (depending on the composition of the intestinal flora)
- fast pulse
- Feeling hungry shortly after a meal
- mood swings
- concentration disorders
Test for fructose intolerance
Several tests can detect fructose intolerance:
- H2 breath test (Attention: In the rare, emboldened fructose malabsorption, the provocation of large amounts of fructose required for this can lead to severe hypoglycaemia. You can carry out a breath test at the gastroenterologist or at home*.
- determination of fructosamine (part of Keac’s HPU screening), measuring glycoside-serum protein compounds. They develop depending on the glucose and fructose present, indicate the tendency to hypoglycaemia or hypoglycaemia and allow conclusions to be drawn about fructose intolerance.
- observation of the above symptoms after ingestion of fructose-containing foods
Therapy of fructose intolerance
- reduce the intake of fructose to an individually tolerable level.
- ozonated olive oils and oregano oil can help with a small intestine deficiency.
- fill up micronutrient deficiencies. In the case of pronounced fructose intolerance, zinc, tryptophan and folic acid are often deficient.
- sweeteners should be avoided as they can disturb the intestinal flora sensitively. Whether Stevia is tolerated, must be examined individually.
- avoid products (mostly prebiotics) containing oligofructose and/or fructooligosaccharides (FOS), e.g. inulin. They usually exacerbate the symptoms of fructose intolerance.