Right Amount of Sleep Associated with Living Longer

Are you getting just the right amount of sleep?

English and Italian researchers investigating the relationship between duration of sleep and mortality from all causes, have performed a systematic review of 16 relevant studies. The studies looked at a total of 1.4 million people, following them up for between 4 and 25 years.

It emerged that people who generally slept for less than six hours per night, were 12% more likely to die prematurely, than those who consistently managed six to eight hours. Longer sleep durations (exceeding nine hours) were associated with a 30% greater risk of death.

(Sleep Duration and All-Cause Mortality: A Systematic Review and Meta-Analysis of Prospective Studies. Sleep Journal May 2010.)