A food intolerance is difficulty digesting certain foods and having an unpleasant physical reaction to them.

It causes symptoms, such as bloating and stomach pain, which usually come on a few hours after consuming the food.

The number of people who believe they have a food intolerance has risen dramatically over recent years, but it’s hard to know how many people are truly affected. Many people assume they have a food intolerance when the true cause of their symptoms is something else.