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Sleep early or sleep forever

September 26, 2007 By Jay

Okay, here’s the deal: Get enough sleep or sleep without waking up again. It’s your choice.

A British study released on Monday said people who do not get enough sleep are more than twice as likely to die of heart disease.

Although the reasons are unclear, researchers said lack of sleep appeared to be linked to increased blood pressure, which is known to raise the risk of heart attacks and stroke.

A 17-year analysis of 10,000 government workers showed those who cut their sleeping from seven hours a night to five or less faced a 1.7-fold increased risk in mortality from all causes and more than double the risk of cardiovascular death.

The findings highlight a danger in busy modern lifestyles, Francesco Cappuccio, professor of cardiovascular medicine at the University of Warwick’s medical school, told the annual conference of the British Sleep Society in Cambridge.

A third of the population in Britain and over 40 percent in the United States regularly sleep less than five hours a night, so it is not a trivial problem, he said.

“The current pressures in society to cut out sleep, in order to squeeze in more, may not be a good idea — particularly if you go below five hours,” he said.

Previous research has highlighted the potential health risks of shift work and disrupted sleep. But the study by Cappuccio and colleagues is the first to link duration of sleep and mortality rates.

The study looked at sleep patterns of participants aged 35-55 years at two points in their lives — 1985-88 and 1992-93 — and then tracked their mortality rates until 2004.

The results were adjusted to take account of other possible risk factors such as initial age, sex, smoking and alcohol consumption, body mass index, blood pressure and cholesterol.

The correlation with cardiovascular risk in those who slept less in the 1990s than in the 1980s was clear but, curiously, there was also a higher mortality rate in people who increased their sleeping to more than nine hours.

In this case, however, there was no cardiovascular link and Cappuccio said it was possible that longer sleeping could be related to other health problems such as depression or cancer-related fatigue.

“In terms of prevention, our findings indicate that consistently sleeping around seven hours per night is optimal for health,” he said.

If most of today’s workers have to be up in bed by 5a.m., it means they have to start counting sheeps in bed by 10 p.m.

But I really don’t know anybody who sleeps that early in the evening. If most people had the 10 p.m. sleeping habit, then local TV stations would only be playing static at around that time since only very few people would be watching.

But of course this is not the case. In fact, the really good TV shows plus the late-night news can only be viewed at around that time.

Whew, no wonder many people are complaining of lack of sleep. These late-night TV shows are virtually killing us!

Filed Under: Featured Articles, Health Features

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