Credit: Kevin Murphy
Light at Night May Raise Depression Risk, Study Suggests
Constant exposure to light at night can cause depression, a new study in animals suggests.
In theِ study, hamsters exposed toِ dim light atِ night forِ four weeks showed signs ofِ depression, suchِ asِ less interest inِ drinking sugar water theyِ usually enjoy, compared withِ animals notِ exposed toِ light atِ night, theِ study found.
The findings suggest exposure toِ artificial light atِ night mayِ haveِ contributed toِ theِ rising rates ofِ depression overِ the lastِ 50 years, saidِ study researcher Tracy Bedrosian, a doctoral student inِ neuroscience atِ Ohio State University.
But theِ study alsoِ suggests good news: theِ negative effects ofِ light atِ night wereِ reversed inِ the animals afterِ just twoِ weeks ofِ normal lighting conditions, theِ researchers said.