Older men, who spend little time in deep sleep may be at risk of developing hypertension, according to U.S. scientists.
The study of 784 patients in the journal Hypertension, showed that they are less deep sleep were 83% higher than the risk of getting the maximum.
Scientists say they expect a similar effect in women.
The British Heart Foundation said it was important for everyone to prioritize sleep.
High blood pressure - also known as hypertension - increases the risk of heart attacks, strokes and other health problems.
The researchers measured the "quality of sleep," 784 men over the age of 65 in 2007 and 2009. At first no one had hypertension, while the 243 was good for the end of the study.
Patients were divided into groups according to the percentage of time devoted to sleep, or slow-wave sleep. Those in the latter group - 4% sleep - had a 1.83 times higher risk of hypertension compared with those in the highest group, which rose from 17% of the night in a deep sleep.
One of the authors of the report, Professor Susan Redline from Harvard Medical School, said: "Our study shows for the first time that poor sleep quality, as evidenced by reduced slow wave sleep, put individuals at significantly increased risk of developing hypertension.
"Although women were not included in this study, it is very likely that those who have less slow-wave sleep in any number of reasons can also be an increased risk of developing hypertension."
According to the report, further studies are needed to determine if improved sleep might be reduced.
Natasha Stewart, a senior cardiac nurse, the British Heart Foundation, said: "Although this study does not suggest your lack of sleep and the development of high blood pressure, only looked at men over the age of 65 years.
"We would need to see more research in other age groups and women's participation to confirm this association.
"We do not know, more generally, that sleep is important to stay healthy. It 'important that we all try to go to sleep a priority and get six to eight hours of sleep during the night."
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