Too little or too much sleep increases the risk of mortality and stroke, reads a comprehensive analysis published by Semmelweis University in the journal Geoscience. People who consistently sleep less than seven hours or more than nine hours a day have a higher risk of mortality, researchers found. According to the study, those who sleep less than seven hours per night have a 14 percent higher risk of mortality. Long sleep duration is even more dangerous for those who regularly sleep at least nine hours per night, as their risk of mortality is 34 percent higher than those who sleep seven to eight hours. Those who slept less than seven hours had a 16 percent higher mortality risk, while sleeping more than eight hours increased it by 36 percent. In women, short sleep duration increased the risk of mortality by 14 percent, while long sleep duration increased it by 44 percent. A common sleep disorder is chronic insomnia. Previous studies suggest that one-third of the world’s population experiences insomnia at least once in their lifetime, and about 10 percent suffer from chronic insomnia. Sleep deprivation is becoming an increasingly serious global public health problem. Millions of people worldwide are not getting enough sleep due to increased workloads, regular use of digital devices, or frequent stress. Shift workers and those with irregular schedules are particularly at risk. Chronic sleep deprivation is associated not only with mortality but also with many health problems, such as obesity, diabetes, cardiovascular disease, and a weakened immune system.
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Thursday, June 26, 2025