‘7 hours of sleep good for heart’

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Aerosmith singer Steven Tyler with girlfriend Erin Brady at Studio 54 inside the MGM Grand Hotel/Casino in Las Vegas on Sunday.

Six, seven or eight — so how many hours of sleep are enough for you? It’s probably best to aim for seven hours of quality shut-eye every night, says a new study led by an Indian-origin researcher. Anoop Shankar and his team at West Virginia University has found that those who sleep more or less than seven hours a day are at a raised risk of developing coronary heart disease, the Sleep journal reported.
They have based their findings on an analysis of data gathered in a national US study in 2005 on 30,000 adults.
The study found that the subjects who said they slept nine hours or longer a day were one-and-a-half times more likely than seven-hour sleepers to develop heart disease.
And, adults under 60 who slept five hours or fewer a night raised their risk of developing cardiovascular disease more than three-fold compared to people who sleep seven hours, the study found.