In people who have hereditary intolerance, or who exhibit malabsorption of fructose by altering the intestinal flora or inflammatory diseases, such as irritable bowel syndrome, for example, consumption of this sugar can cause symptoms such as:
Nausea and vomiting.
Lack of appetite.
Diarrhea or constipation.
As the mother’s milk does not have fructose, the baby only begins to have symptoms when it begins to ingest artificial milk, of milk formulas, or with the introduction of foods, like papinhas, juices or fruits.
If the amount consumed of this sugar by the child with intolerance is very large, there may be more serious symptoms such as apathy, seizures and even coma. However, it is important to remember that the presence of gas, diarrhea and swollen belly may also be symptoms of lactose intolerance.
How to confirm the diagnosis
The diagnosis of fructose intolerance is made by the gastroenterologist, endocrinologist or nutrologist, who make an assessment of the person’s clinical history, and a test is performed with the withdrawal of fructose from the diet and observation of the improvement of the symptoms.
If in doubt, blood and urine tests may be done to evaluate the effects of fructose on the body, in addition to the expired hydrogen test, which is an examination that measures, through respiration, the absorption capacity of fructose by body.