Too often a day's sleep can be a sign of bad health

Too often a day's sleep can be a sign of bad health

According to a recent Chinese study, people who regularly fall asleep have a higher risk of high blood pressure than those who never sleep during the day.

Increased risk of hypertension and stroke

A few months ago, a study was conducted that showed that children who are asleep are better at learning to read. But does day sleep also benefit adults? It seems that while sleep time plays a significant role in this rest, a Chinese study published in Hypertension on July 25, 2022 contains bad news. According to the results of this study, too often a day's sleep can have negative health effects. Researchers from Central Southern University in Changsha suggest that people who are constantly asleep are at greater risk of developing hypertension and stroke.

In order to reach this conclusion, the authors of the study used the Biobank database, which concerns more than 500,000 British adults between the ages of 40 and 69 years, who regularly provided information between 2006 and 2010, and Chinese researchers included surveys in which people participated.

Sleep quality at night

The analysis of these data showed that people who regularly slept during the day were often men who used tobacco and alcohol, and had relatively low levels of education and income, and that the same people often reported insomnia and snoring during the night; the authors of the study estimated that they not only had 12% higher risk of hypertension but also 24% higher risk of stroke.

Science Alert reported on Michael Grandner's comments, a clinical psychologist, and a sleep expert who did not participate in a Chinese study. He said that sleep is not dangerous in itself, but it turns out that people who sleep a lot during the day have poor sleep quality at night, which is related to poor health.

The study only refers to correlation, but it cannot be ruled out that there may be a causal link. About 15 years ago, Greek researchers showed that blood pressure can increase after sleep, a phenomenon that can affect the increased risk of stroke in people who are asleep during the day.