Why Dieting Doesn't Work?

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It's all about what you eat, really. That's increasingly what science seems to be pointing us towards. If exercise isn't as vital as we think it is for losing weight, and it all comes down to food. And i think they've looked at rural tribes in tansania, again, who ware constantly on the move, and they burn pretty much about the same calories in a day, as we do.

New year resolutions often include eating more healthily, doing exercise and trying to shift some of the extra weight put on over Christmas. Yet research suggests the vast majority of people who do lose weight ultimately end up putting nearly all of it back on. So why is it so difficult? Madeleine Finlay speaks to health journalist and ex-neuroscientist David Cox on the science of metabolism, and what it means for our health. Help support our independent journalism at theguardian.com/sciencepod