November 2, 2010

Study: Ambient Light at Night Leads to Obesity

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Diet and exercise are certainly important to maintaining proper health, but a new study has found an interesting result: our metabolism is affected by light exposure when sleeping. Natural News reports:

According to new research, persistent exposure to light at night may lead to weight gain, even without decreasing physical activity or eating more food...

An Ohio State University research team found that mice exposed to a fairly dim light at night over about a two month period experienced a gain in body mass that was approximately 50 percent more than other mice who lived and slept in a normal light-dark cycle. "Although there were no differences in activity levels or daily consumption of food, the mice that lived with light at night were getting fatter than the others," Laura Fonken, a doctoral student in neuroscience at Ohio State who headed the study, said in a statement to the media.


Light pollution is predominant in America's cities and suburbs, perhaps contributing to Americans' tendency to be overweight in light of this new study.

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Posted by Jennifer Lance at November 2, 2010 1:55 AM

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