In Brief

A new study reveals the possible negative effects of artificial light.

PSFK recently took note of the negative effects of nightly exposure to light as it pertains to gaining weight. Ohio State neuroscientist Tracy Bedrosian adds to this by arguing that prolonged exposure to light at night may cause depression.

In a controlled experiment, Bedrosian placed hamsters in one of two different environments. In the first environment, the hamsters spent 16 hours in daylight and then 8 hours in absolute darkness. The second group of hamsters still got 16 hours of daylight, but a dim light was placed in the 8-hour sleeping time.

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