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Too much sleep can up early death risk: Study

Press Trust of India  |  Houston 

While getting enough is vital for staying healthy, snoozing for over nine hours a day could increase the risk of developing heart problems and early death, a study has found.

Researchers from the recently conducted a study to evaluate the association between duration and by reviewing 74 studies, which observed the quality and length of of more than 3.3 million participants.

After analysing the results, they found those who slept for 10 hours were 30 per cent more likely to die prematurely, compared to those who slept for eight hours.

Longer sleepers were also about 50 per cent more likely to develop Those who slept less than seven hours did not have a heighten risk of early mortality or

"We found a significant association between deviations in sleep duration and both mortality and adverse cardiovascular outcomes," researchers said.

"The greater the divergence from the recommended durations of sleep, the greater the association for cardiovascular harm and mortality," they said.

The scientists do not know why longer sleepers are more at risk, but they noted sleeping too long and sleeping too little can both have effects on the body.

"Short sleep duration has been shown to increase levels of leptin and ghrelin, which leads to increased appetite and facilitates the development of obesity," they said.

Depressive symptoms, low socioeconomic status, unemployment, and low physical activity are also associated with long sleep duration. Although this study advises people not to snooze excessively, others have suggested sleeping in may actually be good for your

Indian American medical contributor Dr said the study leaves "a lot of questions that we still have to answer."

It may mean that people who sleep longer have underlying medical conditions, such as sleep apnea, and anaemia, she said.

It could indicate that changes in the circadian rhythm by sleeping longer is causing increased and weakening their immune system, Narula said.

"It could be that they have other adverse behaviours, so people who sleep longer, maybe they don't exercise as much."


She noted that socioeconomic factors like unemployment could also play a role in people's sleep habits and

Most people try to catch up on sleep on the weekends, but Narula said this study is really focused on those who are sleeping long amounts of time day after day, and it's important to focus on creating healthy sleep patterns for the long term.

"Really what you need to remember is consistent and regular sleep health patterns are important," she said.

She recommends a sleep hygiene regimen that includes going to bed and waking up at the same time, sleeping in a cool, quiet, dark room, putting digital devices away, and abstaining from drinking caffeine or alcohol right before bed.

Narula said that for people ages 18 to 64, seven to nine hours of sleep per night is recommended.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Thu, August 09 2018. 11:30 IST
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