Wednesday June 26, 2019

Less Than 7 Hours of Sleep Bad for Your Heart, Warn Researchers

The results suggest that microRNAs in blood could be used as a marker of cardiovascular disease in people with insufficient sleep

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Soothing colours, right scent aid sound sleep. Pixabay

People who sleep less than seven hours each night are at higher risk of developing cardiovascular disease (CVD) and coronary heart disease, warn researchers.

The findings, published in the journal Experimental Physiology, show that people who sleep fewer than seven hours per night have lower blood levels of three physiological regulators, or microRNAs, which influence gene expression and play a key role in maintaining vascular health.

“This study proposes a new potential mechanism through which sleep influences heart health and overall physiology,” said Christopher DeSouza, Professor at University of Colorado in the US.

For the study, the research team took blood samples from a small group of healthy men and women, age 44 to 62, who had filled out questionnaires about their sleep habits.

While half of the participants slept seven to 8.5 hours nightly, the other half slept five to 6.8 hours every night.

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Less than 7 hours of sleep linked to hardened arteries. Pixabay

The research team measured the expression of nine microRNAs previously associated with inflammation, immune function or vascular health.

They found that people with insufficient sleep had 40 to 60 per cent lower circulating levels of miR-125A, miR-126, and miR-146a than those who slept enough.

“Why seven or eight hours seems to be the magic number is unclear. However, it is plausible that people need at least seven hours of sleep per night to maintain levels of important physiological regulators, such as microRNAs,” DeSouza added.

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“They are like cellular brakes, so if beneficial microRNAs are lacking that can have a big impact on the health of the cell,” DeSouza said.

The results suggest that microRNAs in blood could be used as a marker of cardiovascular disease in people with insufficient sleep. (IANS)

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US Doctor Saves Person’s Life Using Apple Watch; Detects Deadly Heart Condition

The key health feature on Apple Watch is yet to arrive in India

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The irregular rhythm notification feature on Apple Watch can check heart rhythms and send a notification if an irregular heart rhythm that appears to be atrial fibrillation (AFib) is identified. Pixabay

In a first, a US doctor has saved a person’s life by using Apple Watch Series 4 on his wrist to detect atrial fibrillation at a restaurant. Atrial fibrillation, a deadly and often undiagnosed condition, can lead to strokes. The condition often remains hidden because many people do not experience symptoms.

The irregular rhythm notification feature on Apple Watch can check heart rhythms and send a notification if an irregular heart rhythm that appears to be atrial fibrillation (AFib) is identified.

“As a physician, it’s much faster to put my #applewatch4 on someone else’s wrist to detect disease (A. fib) than finding a ECG machine at a public restaurant!

Apple watch
The key health feature on Apple Watch is yet to arrive in India. Pixabay

(Indeed, a true #mhealth guardian),” tweeted Tommy Korn MD, and ophthalmologist from San Diego, California. In the replies to his tweet, Korn said that the person diagnosed with A-fib was later doing fine.

ALSO READ: Apple Watch Can Detect And Notify Users Irregular Heart Rhythms

Apple Watch Series 4 is now helping users in the US, Europe and Hong Kong take an electrocardiogram (ECG) right from their wrist, capturing heart rhythm in a moment when they experience symptoms like a rapid or skipped heart beat and helping to provide critical data to physicians. The key health feature on Apple Watch is yet to arrive in India. (IANS)