MAIL ONLINE: Can a £59 DNA kit tell you which diet will really work? High street test claims to recommend a food plan based on your body shape, fat storage and cholesterol levels

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But other scientists are unconvinced. Professor Bill Newman, who specialises in translational genomic medicine at Manchester University, said: 'I am very wary of the evidence regarding these tests. I do not know of any robust studies that indicate their clinical utility and certainly would not recommend them. They are not approved on the NHS as they do not meet the benchmark for clinical use.'