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Too much or too little sleep is bad for health

Gorkha Post

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WASHINGTON — Sleeping too much or not enough may have bad effects on health, according to the study appears in the journal BMC Public Health.

Researchers at Seoul National University College of Medicine found that sleeping fewer than six hours a night or more 10 hours a night increases your risk for metabolic syndrome — a cluster of symptoms (high blood pressure, high blood sugar, excess body fat around the waist, and abnormal cholesterol levels, for example) that increase your risk for heart disease, stroke, and diabetes.

For the study researchers compared to individuals who slept six to seven hours per day, men who slept fewer than six hours were more likely to have metabolic syndrome and higher waist circumference.

Women who slept fewer than six hours were more likely to have higher waist circumference. The authors found that nearly 11 percent of men and 13 percent of women slept less than six hours, while 1.5 percent of men and 1.7 percent of women slept more than ten hours.

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“This is the largest study examining a dose-response association between sleep duration and metabolic syndrome and its components separately for men and women. Because we were able to expand the sample of our previous study, we were able to detect associations between sleep and metabolic syndrome that were unnoticed before,” said Claire E Kim, lead author of the study.

“We observed a potential gender difference between sleep duration and metabolic syndrome, with an association between metabolic syndrome and long sleep in women and metabolic syndrome and short sleep in men.”

Based on common definitions, participants were considered to have metabolic syndrome if they showed at least three of the following: elevated waist circumference, high triglyceride levels, low levels of ‘good’ cholesterol, hypertension, and high fasting blood sugar. The prevalence of metabolic syndrome was just over 29 percent in men and 24.5 percent in women.

The authors suggest that as the prevalence of metabolic syndrome in Korea is high, it is critical to identify modifiable risk factors such as sleep duration.

With Agency Inputs

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Health

Sudden cardiac arrests are more likely to happen on any day at any time : Study

Raghu Kshitiz

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Representationa image

A new study has showed that sudden cardiac arrests are more likely to happen on any day at any time, challenging previous claims that weekday mornings — especially Mondays — were the danger zones.

Previously heart experts have long believed that weekday mornings were the danger zones for unexpected deaths from sudden cardiac arrests.

“While there are likely several reasons to explain why more cardiac arrests happen outside of previously identified peak times, stress is likely a major factor,” said Sumeet Chugh, a Professor of medicine from the Smidt Heart Institute in the US.

“We now live in a fast-paced, ‘always on’ era that causes increased psycho-social stress and possibly an increase in the likelihood of sudden cardiac arrest,” Chugh added.

Almost 17 million cardiac deaths occur annually worldwide while the survival rate from sudden cardiac arrest is less than one per cent.

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For the study, published in the journal Heart Rhythm, Chugh’s team analysed data on 1,535 from the community-based Oregon Sudden Unexpected Death Study between 2004 to 2014, among which only 13.9 per cent died in the early morning hours, the findings revealed.

All reported cases were based on emergency medical service reports containing detailed information regarding the cause of the cardiac arrest.

“Because sudden cardiac arrest is usually fatal, we have to prevent it before it strikes,” Chugh said. “Our next steps are to conclusively determine the underlying reasons behind this shift, then identify public health implications as a result,” he added.

Apart from stress, other contributing factors may be a shift in how high-risk patients are being treated, as well as inadequacies in how past studies have measured time of death caused by sudden cardiac arrest.

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