OTHER SYMPTOMS OF FOOD INTOLERANCE: FATIGUE
Excessive tiredness, that is not relieved by rest, is usually a sign of some mental disorder, such as depression. It can also be caused by many infectious diseases, by anaemia, or by an underactive thyroid gland. Sometimes fatigue persists following a viral infection, and this is now known as post-viral syndrome or chronic fatigue syndrome.
Fatigue is very often reported as a symptom of food intolerance, especially in connection with migraine and irritable bowel syndrome. Early-morning tiredness is the most frequent problem. Looking back over case-histories, it seems that fatigue may be an early warning sign as food intolerance develops. How food might produce fatigue is not known, but exorphins may play a part, or it may be a side-effect of some generalized immune reaction, as is suspected in post-viral syndrome.
There can be several other causes for this problem, and some of these are serious diseases.
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