London: Sleeping in a room with too much light can cause depression, experts claim.

Even just the glow from leaving the television on while you sleep can be enough to trigger the effect, reported on Tuesday.

Lack of darkness during sleeping hours can cause changes to the brain and depressive symptoms, according to animal studies.

Researchers believe staying up late to watch TV or go online might have the same impact on humans.

But the evidence also suggests the effects can be reversed by switching the lights off at night, said.


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