Dr Choudri has coeliac disease himself and knows the importance of a gluten-free diet.

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Unlike teammate Hall, who adopted a gluten-free diet two years ago, Abdirahman doesn't discriminate against carbs.

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Levitsky said a gluten-free diet might have benefits for those with mild allergies, or even no allergy at all.

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"It is well possible that many individuals are on a gluten-free diet for no sound medical reasons, " the authors note.

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The treatment of a serious gluten allergy is a gluten-free diet, which has a lot of meat, fruit, milk and potatoes.

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Even if the tests were negative, many physicians would suggest a two month trial of a gluten-free diet to see if the eczema improves.

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And in a study published last year, researchers in Australia showed in a double-blind, placebo-controlled trial that subjects with suspected gluten sensitivity had substantially fewer symptoms on a gluten-free diet than control subjects who unknowingly ingested gluten.

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"The aim of providing gluten-free food products on NHS prescription is to encourage patients with coeliac disease to stick to a gluten-free, nutritious diet so they do not go on to develop more serious illnesses, which can affect their quality of life as well as being much more costly for the NHS, " he said in a statement.

BBC: NHS 'paid ?17 for gluten-free pizza base'

If your symptoms resolve after one month on a gluten free diet, and the diet does not stop working several months later, this is probably the case and you should do your best to follow a gluten free diet long-term.

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In order to guarantee a varied and balanced diet, Geoff relies on his prescriptions for gluten-free food.

BBC: NHS 'paid ?17 for gluten-free pizza base'