Revealed in mortal danger from a long sleep
Japanese scientists have found that too short and too long sleep increases the risk of dementia and premature death in people older than 60 years. The authors, who published in the Journal of the American Geriatrics Society, a brief account of the scientific work described in the press release on EurekAlert!.
The study included 1517 people watched them in over 10 years. During this time, 294 volunteers developed dementia, and 282 died. The incidence of dementia and mortality, calculated, adjusted for age and gender, was higher in those who slept less than five hours or more than 10 hours a day, compared to those who had paid to sleep 5-9 hours.
However, high physical activity in older people compensated for the negative effect of non-compliance with sleep hygiene, reducing the likelihood of senile diseases.
In may was published an article of scientists from Stockholm University in Sweden, which found that long sleep at the weekend may compensate for the lack of it in everyday life to prevent the related disease, and reduce the risk of premature death. In this case, for people over 65 years of age is enough to more short NAPs.