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Why you should close the blinds when you go to sleep: It matters for your health

2024-09-27 19:08:57Lifestyle SHKRUAR NGA REDAKSIA VOX
Why you should close the blinds when you go to sleep: It matters for your health
Why you should close the blinds when you go to sleep: It matters for your health

If you don't sleep in a completely dark room with closed shutters, then according to Chinese scientists, your heart health is at risk. More specifically, in their research, published in Stroke, they observed that those who kept the shutters open had a 43% increased risk of stroke.

However, there is an explanation, according to researchers, since in this way, street light can enter the room, but also pollution from car traffic, as a result, hinder the body's natural sleep-wake cycle.

Consequently, insufficient sleep puts a strain on the heart and other organs.

"Our study suggests that higher levels of artificial light exposure in nature at night may be a risk factor for cardiovascular disease. Therefore, we advise people living in urban environments to reduce this exposure," says Dr. Jain-Bing Wang, a public health expert and researcher of the study.

To investigate the effect of artificial light on heart function, researchers studied 28,300 people from the Chinese port city of Ningbo, about 120 miles south of Shanghai. Participants were an average of 62 years old and had no history of cardiovascular disease, such as stroke or aneurysm.

Each of the participants was followed for six years – from 2015 to 2021 – with the scientists recording cases of stroke or other related illnesses through hospital medical records. In total, they identified 1,278 cases, of which 900 were related to stroke.

By evaluating the light pollution corresponding to each patient, satellite images were used for analysis purposes. The results were adjusted for age, gender and income to show the risk and impact of light pollution.

"Exposure to bright artificial light at night can affect the body's circadian rhythm by suppressing melatonin secretion. This, in turn, can lead to changes in biological markers, such as increased levels of triglycerides, blood pressure and blood glucose, which are cardiovascular risk factors," emphasizes Dr. Wang.

Combined, the study also looked at the risk of cardiovascular disease from air pollution. It found that those living in areas with the highest levels of PM10 – a tiny compound released from car exhaust – had up to a 50% higher risk of cardiovascular disease, compared to those exposed to the lowest levels. low. Therefore, those exposed to higher levels of PM2.5 particles – a smaller substance emitted by cars – had a 41% higher risk, and finally those exposed to nitrogen oxides had a 31% higher risk. high.

"Despite significant advances in reducing traditional cardiovascular risk factors such as smoking, obesity and type 2 diabetes, it is important to consider environmental factors in our efforts to reduce the global burden of cardiovascular disease," concludes Dr. Wang.


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