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Sleep: Too much is associated with greater risk of disease or death

Based on data from 21 countries across seven regions, the research group found that people who slept more than the…

Based on data from 21 countries across seven regions, the research group found that people who slept more than the recommended upper limit of eight hours increased the risk of major cardiovascular disease such as stroke or heart failure, as well as deaths of up to 41 %.

But a possible reason for this may be that people have underlying conditions that make them sleep longer which in turn can increase the risk of cardiovascular disease or mortality, explain the authors to the study. [19659002] The team, led by Chuangshi Wang, a Ph.D. student at McMaster and Beijing Union Medical College in China, also identified an increasing risk among daytime neighbors.

“Daytime wreaking was associated with increased risks of major cardiovascular events and deaths with those with [more than] six hours night sleep but not in those who sleep [less than] 6 hours a night, Wang said.

For those who slumed “seemed a day-time compensation for the lack of sleep at night and mitigating the risks,” explained Wang.

Previous studies on this topic were conducted mainly in North America, Europe and Japan. The new study gives a global picture.

But The findings are observative, which means that the reason for this association is still unknown.

“Although the findings were very interesting, they did not prove the cause and effect,” said Julie Ward, a leading heart nurse at the British Heart Foundation, who was not involved in the study.

It also turned out that they had less sleep &#821

1; over six hours – increased the risk by 9% compared to those who slept during the recommended six to eight hours, m One did not find that the statistics were statistically significant by the team.

In 2014, 35.2% of American adults failed to sleep enough for less than seven hours per night, according to CDC.

Signs of sleep


The study asked 116,632 adults between 35 and 70 years from 21 countries about their sleepy habits. Participants were then followed an average of 7.8 years.

The team found that for every 1000 people who slept the recommended six to eight hours a night, 7.8 developed cardiovascular disease or died each year. This increased to 9.4 in people who slept six or fewer hours per night.

Francesco Cappuccio, professor of cardiovascular medicine and epidemiology at Warwick University, who was not involved in this study, has done several studies on sleep and its effect on our health. He says that a lack of sleep is “definitely associated with increased risk of death”.

“If you sleep for a long time, you are more likely to develop chronic disease,” says Cappuccio, adding that short sleep time has been shown to increase blood pressure, obesity and diabetes.

for those under investigation was not found to be statistically significant, and the greatest risk was seen among those who slept.

 Sleep late? Nappa all the time? What your sleep says about your health

For those who slept eight to nine hours, 8.4 per 1,000 people developed heart disease or died each year. This increased even more in those who slept nine to 10 hours (10.4 per 1 000) and again among those who slept over 10 hours (14.8 per 1 000).

This corresponds to an increase in risk by 5%, 17% and 41%, respectively, compared to those who slept the recommended time.

But Wang pointed out that too much sleep can be a marker for other causes of cardiovascular disease and death.

Cappuccio agreed and added that “it’s not so long sleep that causes death or disease” but the bad health will cause you to sleep more.

Cappuccio mentioned that people who have an undiscovered disease may suffer from an extension of sleep. For example, if someone has an underlying cancer, they will be more tired and weakened and tend to sleep longer.

The study’s main takeout is that the optimal time for estimated sleep is six to eight hours a day for adults, Wang explained.

It is “very important to point out that there are some very easy things you can do to help you sleep better at night,” Ward said, urging people to avoid caffeine in the afternoon or evenings, as well as alcohol and nicotine, which can interfere with sleep patterns. Exercise and a balanced diet can help, she added.

“Napping Can Reflect Underlying Illness”

Daytime depression was found common in Middle East, China, Southeast Asia Asia and South America, and were associated with higher risks of death or cardiovascular problems among those who They also received the recommended hours of sleep at night or more.

 To sacrifice sleeping? Here's what it will do for your health

But that was not the case for people who slept for six hours a night.

“On these individuals, a daytime sleep seemed to compensate for sleeplessness at night and to alleviate the risks,” Wang said.

However, for those who slept adequately at night, “daytime sewing was associated with increased risk of major cardiovascular events and deaths,” she said.

Cappuccio has previously conducted surveys on daily kidnapping among British adults.

“Napping can reflect underlying illness (fatigue, fatigue ) leading to morbidity and mortality can be a proxy for sleep disorder, as a compensatory suspension mechanism, or may also be a symptom of circadian wrongdoing” he said.

Monitoring of Sleep Patterns

] The study had several limitations, Wang pointed out, when participants were asked to report their sleeping patterns and the duration of sleep was based on space between going to bed and wake up.

The team also did not collect data about sleep disorders, such as insomnia, which could affect sleep and also affect health, paper condition.

Wang explained that it is usually not possible to accurately measure sleep time in large population studies.

The researchers hope their results will encourage physicians to ask their patients about sleep patterns when discussing overall lifestyle factors to identify possible underlying health problems.

Salim Yusuf, Professor of Medicine at McMaster University and Principal Researcher of the PURE Study from which the participants were selected said: “For doctors including questions about how long sleep and daytime illnesses in your patients clinical stories may be help in identifying people at high risk of heart and blood vessel problems or death. “

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