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Cold weather — Is it good or bad for your health? From the Harvard Health Letter

January 1, 2010

Is cold weather good or bad for your health? It depends. Cold weather can be hard on your health in some ways, but it also be good for it, reports the January 2010 issue of the Harvard Health Letter.

Most of us spend the winter trying to stay warm, but a little bit of exposure to cold may not be such a bad thing. There are two types of fat in the human body: white fat and brown fat. Brown fat is the heat-producing, calorie-burning fat that babies need to regulate their body temperatures. Most of it disappears with age, but adults retain some brown fat. Dutch researchers reported findings last year that showed that moderately cool temperatures of 61° F activated brown fat in 23 of 24 study volunteers. This is a good thing because brown fat burns calories more efficiently than white fat, and so may help control weight. When we get chilled this winter, we may take some consolation that at least we’re firing up those brown fat cells.

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