Going to bed an hour earlier can lower BP

Last Updated 04 December 2012, 15:29 IST

Going to bed an hour earlier than usual could help ward off high blood pressure in just six weeks, according to a new study.

Researchers found people who were showing early signs of high blood pressure were able to restore readings to healthy levels in just six weeks if they had an extra hour in bed every night.

The study, carried out at Harvard Medical School in Boston, US, looked at men and women who regularly slept for only seven hours or less a night and were beginning to have borderline high blood pressure readings, the Daily Mail reported.

High blood pressure or hypertension is thought to be responsible for half of all heart attacks and strokes.

Despite availability of a range of drugs it is estimated more than half of all patients have “poorly controlled” blood pressure, which means they still have readings in the danger zone above 140mmHg/90mmHg, a measure of the amount of force inside arteries when the heart is forcing blood through them and the force when it relaxes.

Lack of sleep and a stressful lifestyle have long been associated with an increased risk of the condition.

The latest study is one of the first to prove that blood pressure can be brought under control by simply increasing sleep duration.

Researchers recruited 22 middle aged men and women who either had prehypertension, where their readings were not excessively high but had been increasing and were on target to reach dangerous levels.

The volunteers all claimed to sleep seven hours or less a night.Over a six week period, 13 of the group were told to extend their sleeping patterns by getting to bed an hour earlier than they normally would.

The rest were told to stick to their normal sleeping routines. They all wore monitors to check their blood pressure round-the-clock and underwent blood and urine checks too.

The results, published in the Journal of Sleep Research, showed the extended sleep group managed to get at least 35 minutes extra in bed.

As a result, their average blood pressure readings dropped sharply by between eight and 14mmHg.

(Published 04 December 2012, 15:29 IST)

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