In the quiet hours that older adults lose to sleeplessness, something deeper than rest is also being lost — the body's own pace of aging accelerates. Researchers at UCLA Health have found that cognitive behavioral therapy for insomnia, a structured intervention targeting the thoughts and habits that sustain sleeplessness, not only restores sleep but measurably slows biological aging at the molecular level. Published in The Lancet Healthy Longevity, the study places insomnia alongside diet and exercise as a modifiable factor in how we age — suggesting that the path to a longer healthspan may ru