With a food intolerance the body is not able to absorb and process particular substances. This can be caused in various ways. Generally the intolerance reactions can be attributed to enzyme disorders, which are responsible for breaking down or absorbing specific food substances.
The enzyme deficiency or defect can either be innate or acquired. Food intolerances include, among others, intolerance to gluten, lactose, fructose, sorbitol, and histamine intolerance. The symptoms mainly manifest themselves as physical problems in the gastro-intestinal tract such as stomach pains, nausea, diarrhoea, vomiting, although itching, redness and puffiness can also occur.