Light at night ‘may increase depression risk’

Light at night 'may increase depression risk'

Light at night ‘may increase depression risk’

Having light of any kind in the bedroom could be connected to depression, it has been suggested.

A study by researchers in the US examined the effects of even a dim glow – such as that from a television set – on hamsters and found it can cause physical changes in their brains.

These alterations, which may be linked to depression, were located in the hippocampus and female Siberian hamsters exposed to light at night demonstrated more depressive symptoms than those sleeping in the dark.

Presenting their findings at an annual meeting of the Society for Neuroscience in San Diego, the experiment, the team from Ohio State University suggested the results may be linked to production of the hormone melatonin.

“You would expect to see an impact if we were blasting these hamsters with bright lights, but this was a very low level,” Randy Nelson, Co-Author of the study, stated.

In related news, a study by experts from the Emory University School of Medicine in Atlanta, Georgia, recently indicated a lack of good quality rest on mattresses may be linked to increased risk of stroke or heart disease in humans.

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