Association between sleep duration and healthy aging among older adults: evidence from the Behavioral Risk Factor Surveillance System.

A longitudinal study [ 45 ] based on a 19-year follow-up of more than 800 middle-aged and older Americans found that those who slept 7–8 h were 10% less likely to achieve healthy aging than those who slept < 7 or > 8 h at night, but this did not reach statistical significance.

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