After conducting what is known as meta-analysis (pooling together data which can indicate patterns and trends not obvious in individual studies), on 16 studies involving 1.5 million participants, scientists concluded that there is a direct link between sleeping less than six hours a night and dying prematurely.
Those who regularly slept for six hours or less were at a 12% higher risk of dying over the next 25 years or less compared to those who slept for their recommended six to eight hours.
Experts have also linked sleeping more than nine hours a night with an early death due to long sleeping indicating a serious underlying illness.
Professor Francesco Cappucio, head of the Sleep, Health and Society Programme at the University of Warwick, said: “Whilst short sleep may represent a cause of ill-health, long sleep is believed to represent more an indicator of ill-health.
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