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Diets and health fads are everywhere, but what actually works? At 91av Live next month, Geneticist will take a close look at our obsession with calorie counting, examine regimes such as the palaeo diet and clean eating, and argue that we really shouldn’t fear food.

Based at the University of Cambridge, Yeo is an expert on obesity and how our brains control how much we eat. His current research focuses on why some people are lean while others are obese, and the influence our genes have on how we eat.

is the world’s greatest science festival and runs from 10 to 13 October at ExCel London. You can .