Getting Under Seven Hours Of Sleep May Be Risking Your Life Short

For years, sleep has been treated like an optional luxury something people sacrifice to work longer, scroll more, or catch up later. A new nationwide study suggests that mindset may be quietly shortening lives. Researchers at Oregon Health & Science University (OHSU) have found that people who regularly fail to get enough sleep tend to live shorter lives and the effect is stronger than that of poor diet, lack of exercise, or social isolation. The findings were published in SLEEP Advances. Instead of focusing on individuals, the study looked at the bigger picture. Scientists examined sleep patterns and life expectancy across more than 3,000 U.S. counties, using CDC survey data collected between 2019 and 2025. When these figures were compared year by year, a striking pattern emerged: areas where more people slept less than seven hours a night consistently showed lower life expectancy. Much of the work was carried out by graduate students in OHSU’s Sleep, Chronobiology and Health Laboratory. While scientists have long known sleep supports overall health, the authors said the consistency and strength of the findings across all states and years stood out. “It’s intuitive and makes a lot of sense, but it was still striking to see it materialize so strongly in all of these models,” McGill said. I’m a sleep physiologist who understands the health benefits of sleep, but the strength of the association between sleep sufficiency and life expectancy was remarkable to me.” Although the study did not examine biological mechanisms directly, researchers pointed out that sleep plays a critical role in heart health, immune defence, metabolism, and brain function. Chronic sleep deprivation is already linked to conditions such as high blood pressure, diabetes, obesity, heart disease, stroke, depression, and anxiety. “This research shows that we need to priorities sleep at least as much as we do to what we eat or how we exercise,” McGill said. “Sometimes, we think of sleep as something we can set aside and maybe put off until later or on the weekend. Getting a good night’s sleep will improve how you feel but also how long you live.”

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