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01:13

Going to bed one hour earlier 'could significantly cut depression risk'

Researchers believe going to bed or waking up just an hour earlier could reduce the risk of depression by almost a quarter.

The study from the University of Colorado Boulder, the Broad Institute of MIT, and Harvard discovered that chronotype, which is a person's propensity to sleep at a certain time, influences the risk of depression.

The researchers analysed the genetic data of nearly 840,000 adults of European ancestry and found a link between earlier sleep timing patterns – getting up and going to bed early – and lower risk of a 'major depressive disorder'.

It's thought the greater exposure to light during the day results in 'a cascade of hormonal impacts' that can affect someone’s mood.

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