Serpent's Egg

The Eroticism of Fat Men

Sleep deprivation puts strain on heart, scientists prove

105581699-sleepy-sleep-large_transjcfm_5zionnrbqhnl8csrzs9yzjan7kdhy8nwwmirry
Not getting enough sleep forces the heart to have to work harder, a study has shown  CREDIT: HENRY STEADMAN

Just one night of sleep deprivation is enough to cause strain on the heart – forcing it to work around 10 per cent harder the next day, a new study has shown.

People who work in fire and emergency medical services and other high-stress jobs are often called upon to work 24-hour shifts with little opportunity for sleep.

While it is known that extreme fatigue can affect many physical, cognitive and emotional processes, it is the first study to examine how working a 24-hour shift specifically affects heart function.

“For the first time, we have shown that short-term sleep deprivation in the context of 24-hour shifts can lead to a significant increase in cardiac contractility, blood pressure and heart rate,” said study author Dr Daniel Kuetting, of the University of Bonn in Bonn, Germany.

For the study, 20 healthy radiologists, including 19 men and one woman, with a mean age of 31.6 years were recruited and their hearts checked before and after a 24 hour shift, with an average of three hours of sleep.

The researchers measured the strain on the heart as well as blood pressure and heart rate.

Cardiologist with heart
It is the first study to show that sleep deprivation puts strain on the heart  CREDIT: PETER DAZELEY

Following sleep deprivation the participants showed significant increases in the strain on their  hearts, with the organ having to work around 10 per cent harder than usual. The participants also had significant increases in levels of thyroid stimulating hormone and cortisol, a hormone released by the body in response to stress.

“The study was designed to investigate real-life work-related sleep deprivation,” added Dr Kuetting.

“As people continue to work longer hours or work at more than one job to make ends meet, it is critical to investigate the detrimental effects of too much work and not enough sleep.”

Dr Kuetting said the results of this pilot study, which were presented at the annual meeting of the Radiological Society of North America are transferable to other professions in which long periods of work are common.

“These findings may help us better understand how workload and shift duration affect public health,” he said

Watch | Women’s health advice: heart disease

01:34

In the past lack of sleep has been linked with factors such as disrupted metabolism and raised levels of’ cortisol, all of which may lead to higher blood pressure and increased stroke risk.

In 2010 a major study by the University of Warwick  found that people who slept for less than six hours each night were 12 per cent more likely to die prematurely – before the age of 65 – than those who slept the recommended six to eight hours a night.

But sleeping too much has also been linked with ill-health, and an increased risk of early death.

Studies have found that sleep makes it easier to retrieve nuggets of information that may have got lost in a corner of our brain.

In two situations where subjects forgot information over the course of 12 hours of being awake, after a night’s sleep they were about twice as likely to be able to remember it, the University of Exeterstudy found.

Advertisements

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Information

This entry was posted on December 2, 2016 by and tagged , , .

Follow me on Twitter

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 218 other followers

Blog Stats

  • 133,634 hits
%d bloggers like this: