Has the rise of new weight-loss drugs become a game-changer for the obesity crisis?Can we all now inject ourselves thin? Will restaurants and gyms go out of business as we don’t want to eat, and don’t need to exercise? The drugs are becoming available on the NHS and will soon be in pill form - and they seem to be safe. But does the medical treatment ignore the complex social and economic background to obesity? Phil and Roger ask Dr Martin Whyte, associate professor of metabolic medicine at the University of Surrey.

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