Sleeping with lights can damage your heart, experts say – here’s what you can do

A new study has found that exposure to light while sleeping can be harmful to cardiovascular health.

Recent research published in the journal Proceedings of the National Academy of the Science shows that sleeping even in low ambient lighting can be harmful to your health.

Sleeping with lights on can damage your heart, according to a new study.


Sleeping with lights on can damage your heart, according to a new study.

Some adverse effects include an increased heart rate during sleep, decreased heart rate variability, and increased insulin resistance in the morning, the study authors note.

“The results of this study show that just a single night of moderate room lighting during sleep can impair glucose and cardiovascular regulation,” Dr. Phyllis Zee, director of sleep medicine at Northwestern University’s Feinberg School of Medicine and a co-author of the study, said.

dr Zee added that such effects can increase the risk of heart disease, diabetes and metabolic syndrome.

For the study, the team monitored patients who slept in moderately lit and dimly lit rooms over the course of a night.

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The team then assessed how their bodies responded during the night and into the next day.

Subjects sleeping in the moderately lit rooms went into a heightened state known as sympathetic activation.

Our body’s autonomic nervous system activates our sympathetic nervous system during the day to prepare us for activity and regulate our stress levels.

At night, our parasympathetic nervous system is supposed to be activated so that we can rest and digest.

“Even though you are asleep, your autonomic nervous system is activated. This is bad. Normally, along with other cardiovascular parameters, your heart rate is lower at night and higher during the day,” said Dr. Daniela Grimaldi, a co-first author and research assistant professor of neurology at Northwestern.

Additionally, the researchers saw insulin resistance in participants from the moderately lit room the next morning.

Insulin resistance is when cells in your muscles and fat can’t properly access glucose from your blood for energy, causing your pancreas to produce more insulin.

This causes your blood sugar to rise over time, potentially leading to type 2 diabetes.

“These findings are important, especially for those living in modern societies where exposure to indoor and outdoor nighttime light is becoming more widespread,” said Dr. Zee.

“If you can see really well, it’s probably too bright.”

How can you protect your health?

according to dr Zee makes it crucial for people to avoid or minimize the amount of light they receive while they sleep.

Blackout screens or eye masks are a good option to limit the amount of outside light you are exposed to.

If for some reason you need to use a light, using smart bulbs and setting them to a red tint might be the best option.

According to a study, basking in red light in the hours before bed can support a healthier sleep.

“The study demonstrated the effectiveness of red light therapy in increasing levels of melatonin — a hormone associated with sleep control — and improving sleep quality,” said Dr. Verena Senn, neurobiologist and research director at Emma Sleep, compared to T3.

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She added that red light’s lower brightness and warmer hues also help your body relax, which can lead to better sleep.

Many smart bulbs, like Wiz’s, come with preloaded color schemes meant to encourage sleep – these can be found in the app you use to set up your bulbs.

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