Can you eat to your heart's content? Or do you feel unwell after eating certain foods? It may be that your body does not tolerate certain foods. This may be because of a food intolerance: you don't have enough of the enzymes required to process substances such as lactose, fructose or histamine.

What actually causes food intolerances? How can you tell whether you have a food intolerance? And what should you do if your body can't break down lactose, fructose or histamine sufficiently? You will find the answers to these and other questions here.