(ORDO NEWS) — An international team of scientists has concluded that poor-quality sleep contributes to the development of cardiovascular disease two to seven years earlier than in people who do not have such problems.
There are many studies on the benefits of normal sleep. Recently, for example, scientists from the Beth Israel Deaconess Medical Center in Boston and Harvard Medical School (USA) found that good sleep reduces the risk of premature death by 30 percent.
At the same time, in men who had “perfect” sleep, life expectancy turned out to be almost five years longer, and in women – by 2.4 years.
A new study by scientists from the universities of Southern Denmark and Sydney (Australia) was based on the analysis of questionnaires from 308,683 adults from the British Biobank.
“Everyone who has experienced several difficult nights knows how much this factor affects mood and well-being.
Our work has shown that, over time, regular poor sleep can lead to significant deterioration of cardiovascular health in middle and old age,” said Professor Emmanuel Stamatakis, senior author of the study from the University of Sydney.
As an assessment of sleep, scientists took into account its duration, complaints of insomnia, snoring, daytime sleepiness, predisposition to early or late departure for night vigils.
They then compared that data with the participants’ cardiovascular health scores.
As a result, the researchers divided the volunteers into three groups: those who had poor-quality sleep; people whose sleep indicators were average; and those who did not have any problems on these indicators.
The researchers first compared these data when the participants were 40 years old, and then compared them with the health of the cardiovascular system of the surveyed at an older age.
It turned out that women who had problems with sleep had heart problems two years earlier than their peers who did not know such difficulties.
In men, these figures were even higher – more than two years. Ladies with average sleep rates lost one year of healthy heart life, men more than a year.
The average life expectancy of the study participants was in the region of 80 years.
The researchers calculated that people with clinically diagnosed sleep-disordered breathing and other similar problems developed cardiovascular disease more than seven years earlier than those who had healthy sleep.
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