Food allergy and food intolerance – important differences

It is important to distinguish between these two terms as they can sometimes be confused.

Food allergies are generated by the immune system and usually occur within seconds or minutes of eating the food in question. Tiny amounts can cause potentially life-threatening allergic reactions, which is why it is vital to know about the ingredients and preparation of foodstuffs.

Food intolerance is not triggered by the immune system and is generally non life-threatening. It may affect the digestion and common symptoms include digestive discomfort, diarrhoea and bloating.

Coeliac disease is not an allergy or a simple food intolerance. It is an autoimmune disease which is triggered by eating gluten from the cereals wheat, rye and barley. Some coeliacs are also sensitive to oats. It is genetic and life-long although it may be diagnosed at any age. For further information see www.coeliac.org.uk

This website concentrates on food allergy.