Longevity
OHSU study finds short sleep is strongly associated with lower life expectancy across U.S. counties
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A new Oregon Health & Science University analysis of U.S. county data from 2019 to 2025 found that regularly getting less than seven hours of sleep per night is associated with shorter life expectancy. In the researchers’ models, the sleep–longevity link was stronger than associations seen for diet, physical activity and social isolation, and was exceeded only by smoking.
A new analysis suggests that varying exercise routines, such as mixing running, cycling, and swimming, may reduce mortality risk by 19 percent compared to less diverse workouts, even when total activity levels are similar. Researchers examined data from over 110,000 U.S. participants tracked for more than three decades. The findings highlight potential benefits of exercise variety, though they remain suggestive rather than conclusive.
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Researchers at the University of São Paulo are investigating why some Brazilians live past 110, highlighting the country's genetic diversity as a key to understanding extreme aging. Their study reveals unique genetic variants and resilient immune systems in supercentenarians who often thrive without modern healthcare. This work challenges traditional views of aging as decline, portraying it instead as biological resilience.