Sleep duration outside 6.4–7.8 hours linked to accelerated biological aging

An analysis of 23 biological aging clocks across multiple organs found that both short and long sleep are associated with faster aging in the brain, heart, lungs, and other systems. The lowest aging levels occurred in people sleeping about 6.4 to 7.8 hours per day. These sleep patterns were also tied to a wide range of diseases, supporting the idea that sleep is crucial for coordinated organ health.