Home Digestive system Symptoms of fructose intolerance in adults

Symptoms of fructose intolerance in adults

by Alivia Nyhan
Published: Last Updated on

Fructose is a monosaccharide and is also recognized as levulose. It is the primary sugar found naturally in fruits and honey. Likewise, it is found in regular sugar, called table sugar, with 50% glucose and 50% fructose.

As many people suffer from glucose intolerance, there are also several who have fructose intolerance. If you correspond to the latter case, you do not have the necessary protein to properly digest this monosaccharide, which can also be present in artificial sweeteners and food products.

The cause of this disorder is usually hereditary, so it is common to present it from a very young age. On the other hand, it is also possible that you suffer from fructose malabsorption due to a lack of aldolase B, which is responsible for the correct digestion of the monosaccharide.

If you know or suspect that you may have this disorder, you must see a doctor. Meanwhile, at FastlyHealwe want to detail the symptoms of fructose intolerance in adults.

epileptic seizures

The seizures are presented as uncontrollable jerking of the body and fast. Your muscles repeatedly contract and relax during these episodes, although these seizures may also appear without tremors.

Seizures can be caused by many disorders, so you must consult a doctor if you have such an episode. As people who suffer from fructose intolerance have difficulty absorbing this monosaccharide, seizures can be caused by incorrect levels in your body.


Suffering from drowsiness, often identified as excessive sleep, is another of the symptoms of fructose intolerance in adults and refers to the fact that you feel abnormally wanting to sleep throughout the day; you can even fall asleep at any time. Place, no matter what time or situation you are in.

You must visit a doctor if you suffer from drowsiness, as it can be due to other disorders such as diabeteshypothyroidism, hypercalcemia, insomnia, and chronic pain, among others.


Jaundice can also be another symptom of fructose intolerance in adults. This causes your skin, like the whites of the eyes, to turn yellow. However, you can also present them for various reasons, such as blood diseases, infections, consumption of some medications, and excess bilirubin, among several others.

Fructose intolerance in adults can frequently lead to liver failure and, for this reason, cause jaundice; However, to know the correct cause that your skin and the whites of your eyes turn yellow, it is essential that you consult with a specialist to indicate the corresponding studies and, in this way, give you the appropriate treatment.

Vomiting, gas, and diarrhea

When suffering from fructose intolerance, the appearance of symptoms similar to poor digestion after you eat fruits or foods with this monosaccharide is quite common. The most normal is vomiting, diarrhea, gas, and stomach pain.

This is easy to control, as you need to avoid ingesting any product that contains fructose. In any case, you must consult a doctor and rule out any other possibility.


Another of the most common symptoms of fructose intolerance in adults is hypoglycemia. This is an alteration in average blood sugar levels, in which the amount in your body is much lower.

This is because fructose interferes with your body’s ability to transform glycogen into glucose. This disorder can lead to dizziness, confusion, anxiety, and tremors if you are one of the people who suffer from fructose intolerance.

This article is merely informative, at FastlyHeal .com we do not have the power to prescribe medical treatments or make any type of diagnosis. We invite you to see a doctor in the case of presenting any type of condition or discomfort.

If you want to read more articles similar to Symptoms of fructose intolerance in adults, we recommend that you enter our Digestive System category .

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