Too Much Sleep May Age Your Body Faster, New Study Warns

A new study of nearly 500,000 UK Biobank participants found a U-shaped link between sleep duration and biological aging across organs.

Sleeping fewer than 6 hours or more than 8 hours a night was associated with faster aging in many organs, including the brain, heart, lungs, immune system, and liver.

The healthiest aging patterns appeared at about 6.4 to 7.8 hours of sleep per night.

Abnormal sleep was also linked to higher risks of mental, cardiovascular, respiratory, and metabolic disorders.