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Could Turning Down the Thermostat Help You Lose Weight?

Early research suggests slightly cooler temperatures mean more calories burned per day

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"The other experiment ... is 'cold-temperature training,' also known as 'acclimatization,'" van Marken Lichtenbelt said. "This has been shown to rev up brown fat in rodents, and it seems possible that it could do the same in people."

Unlike white fat, brown fat burns calories instead of storing them. Some studies have shown that brown fat has beneficial effects on blood sugar tolerance, fat metabolism and body weight.

"It would be very interesting to do something like this in people who are dieting and exercising to lose weight, to see if this strategy could increase the weight loss or even allow the diet and exercise plan to work," van Marken Lichtenbelt said. "We know that so many people struggle with diet and exercise alone."

Is it worth turning down the thermostat if you're trying to shed some pounds? It's too soon to be certain that strategy would work, said Lazar, who also is the director of the University of Pennsylvania's Institute for Diabetes, Obesity and Metabolism.

"It would do no harm," he said. "It's worth a try for someone who is having trouble losing weight by diet and exercise alone."

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