Symptoms of food intolerance

Intolerance to foods is a common complaint with varied symptoms, including irritable bowel syndrome–type symptoms, bloating, headache, ‘brain fog’, skin rashes and lethargy. Up to 20% of the population report an intoleranceLomer, 2015, though the true incidence is likely to be much lower. Very rarely, food intolerance may reflect an underlying metabolic disorder.