Tuesday, February 21, 2012

Rethinking dieting

Scientists are discovering that the way we’ve all been told to plan and carry out our weight loss plans might be totally wrong:

Everything you know about dieting is wrong, say US scientists who have devised a new formula for calculating calories and weight loss that they hope will revolutionize the way people tackle obesity.

[…] Current standards in the United States, where two thirds of people are overweight or obese, advise people that cutting calories by a certain amount will result in a slow and steady weight loss over time.

But that advice fails to account for how the body changes as it slims down, burning less energy and acquiring a slower metabolism, researchers told the American Association for the Advancement of Science meeting in Vancouver.

The result is a plateau effect that ends up discouraging dieters and sending them back into harmful patterns of overeating.

man_on_scaleAs an example, researcher Kevin Hall offered up his large vanilla latte, purchased at a popular coffee shop. When he asked, the barista told him it contained about 240 calories.

“The notion was if I drank one of these every day and then I replaced it with just black coffee no sugar, then over the course of a year I should lose about 25 pounds, and that should just keep going,” Hall told reporters.

“People have used this sort of rule of thumb to predict how much people should lose for decades now, and it turns out to be completely wrong.”

Hall, a scientist with the US National Institutes of Health, said his work aims to “come up with better rules and better predictions of what is going to happen when an individual changes their diet.”

There’s a lot more at Raw Story.

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