Once, pasta and bread were store cupboard staples. Now, many of us are replacing them with ‘healthier’ gluten-free foods. But are they really better for us? ... The new ubiquity of gluten-free products certainly makes life much easier for sufferers of coeliac disease, an auto-immune response to wheat where the body believes wrongly that gluten is attacking it... But coeliacs make up only one in 100 of the population ... Nutritionist Ian Marber agrees that yeast, not gluten, may be the real culprit... Marber acknowledges that gluten intolerance does exist, but probably in fewer cases than is generally believed. ......