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Presented by `Supershoppers" Sabrina Grant, `The Secret Lives of Slim People' tackles obesity, one of the UK's biggest health crises, by closely examining and unlocking the behaviours and eating patterns of people who appear to be naturally slim. Sabrina explores the latest science and takes a close look at people's eating habits and activities to help find answers as to why some people put on weight while others seem to remain effortlessly slim.