The number of vegans has grown every year. The reasons why people turn vegan vary from person to person, but some make the move on the basis that it is a healthier way of living.

But how founded are these claims that it is healthier?

Dr Keren Papier is a Nutritional Epidemiologist at the University of Oxford and she joins John Stanley and Paul B Kidd to share why the answer could be more complex than first thought.

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