Nutritional deficiencies & Food allergies
Being deficient in some important nutrients may be a sign that you have a leaky gut. Leaky gut syndrome is associated with damage to the cells of the intestinal wall. If cells in the gut are damaged, your intestine may not be able to produce sufficient enzymes required for digestion. This can make your body unable to absorb vital nutrients and result in nutritional deficiency [5].
Leaky gut syndrome may cause or contribute to some food allergies [6]. If you have a food allergy, it means that your body reacts to certain types of foods as though they are harmful substances. This can cause a lot of uncomfortable symptoms.
It is still unclear how exactly a leaky gut contributes to food allergy. Leaky gut syndrome is believed to allow some undigested food particles to enter the bloodstream from the gut. This can trigger an immune response because the body identifies these food substances as harmful.