The dodgy science behind the claim that exercise doesn’t help you lose weight

You may have heard the news that the nation’s doctors have had a change of heart about physical activity and no longer believe it to be a sensible way of staying slim. Don’t be too quick to put your feet up. All is not as it seems. The doctors responsible (or, arguably, irresponsible) for this claim are Aseem Malhotra, Tim Noakes, and Stephen Phinney. Malhotra is a Croydon-based cardiologist who rose without trace several years ago, first attacking junk food and then climbing aboard the anti-sugar bandwagon. Now the scientific director of the wacky pressure group Action on Sugar, he explicitly tells people to eat more saturated fat and implicitly tells people not to bother exercising –unusual advice from someone who looks after people’s hearts for a living. Last year, he wrote an article for the British Medical Journal which was investigated and corrected after it made insupportable claims about the safety of statins.