Tuesday, September 25, 2007

Dangerous - Less or more of sleep

Medical researches are in constant flux and new studies keep cropping up time and again to confound us. It had been a long-held opinion that reduced sleep led to heart ailments.Even small reductions in sleep, they say, over time, may put people at increased risk for cardio-vascular diseases.
According to Reuters,although the reasons are unclear,lack of sleep appeared to be linked to increased blood pressure, which is known to raise the risk of heart attacks and stroke.

But if lack of sleep is dangerous, so is excess sleep. Yahoo news
has published a study about how sleeping too much, just like sleeping too little, could be linked to a person's risk of an early death.Those who were able to increase how long they slept for up to 8 hours or more a night were also more than twice as likely to die as those who had not changed their sleeping rituals at all.

The optimum amount may just be what lies in between-about 7 hours of sleep per night.

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