A BBC News report indicates a recent study shows that adults who sleep for less than 6 hours or more than 8 hours are at risk of dying earlier.

Prof Franco Cappuccio, professor of cardiovascular medicine and epidemiology at the University of Warwick, has analysed 16 studies, in which overall more than a million people were asked about their sleeping habits and then followed up over time.

Cappuccio put the people involved into three broad groups: those who said they slept less than six hours a night; those who said they slept for between six and eight hours; those who said they slept for more than eight hours.

His analysis showed that 12% more of the short sleepers had died when they were followed up, compared to the medium sleepers.

However, 30% more of the long sleepers had died, compared to the medium sleepers.

View the full story at www.bbc.com