I’m a scientist – exercise won’t help you lose weight on its own, it’s what you eat that counts

Prof Spector, from King’s College London, said exercise – of any kind – actually plays “very little role in weight loss”.

He told the podcast The Diary of a CEO: “All the long-term studies show it doesn’t help weight loss…

“It’s been grossly exaggerated as an easy fix for our obesity problem. All the studies show that.

“The only caveat to that is if you have changed your diet, improved your diet and lost some weight, maintaining some exercise does prevent it going back up again.

“But on its own, if you don’t change your diet, it’s no use and that’s well known now by all obesity experts and the studies.”

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