Gluten is a type of dietary protein, and can include wheat, barley or rye. It’s usually found in pasta, bread, sauces, cakes and beers.
If you develop coeliac disease, you may have a range of gut symptoms, warned the NHS.
Diarrhoea, stomach aches, bloating and constipation are all common in coeliac patients.
If you think that you may have coeliac disease, you should speak to a doctor straight away.