Eighteen months after the prime minister launched his strategy to help the nation lose weight, EastEnders actress Clair Norris, who is overweight herself, wants to know if it is working. One in four adults in the UK are currently living with obesity, a health risk highlighted by the Covid-19 pandemic. Clair meets teenagers on a weight management scheme in Sheffield, a man-versus-fat football team in Norfolk, and a dancer running classes for plus-size women. She delves into the complex reasons why some people find it difficult to lose weight and asks if you can be overweight and stay healthy.