Columbia University Study Links Sleep Duration to Accelerated Aging Across Organs
A study conducted by Columbia University Irving Medical Center has found that both insufficient and excessive sleep are linked to accelerated aging in various organs, including the brain, heart, lungs, and immune system. Led by Junhao Wen, an assistant professor of radiology, the research utilized aging clocks to measure biological aging across different organs. The study, published in Nature, analyzed data from the UK Biobank involving half a million participants. It revealed a U-shaped pattern where both short sleep (less than 6 hours) and long sleep (more than 8 hours) were associated with faster aging, while optimal aging was observed in individuals sleeping between 6.4 and 7.8 hours. The findings suggest that sleep duration is a significant factor in maintaining organ health and could be linked to various diseases. 
