cohort study

Longevity

The Sleep Secret Hiding in Your Calendar: Why Staying Busy May Outrank Workouts After 60

A 13-year cohort study following more than 1,000 older adults suggests that a varied, engaged life — not just exercise — tracks with better sleep in later decades.

Longevity

Are Life Expectancy Gains Finally Slowing? What New Cohort Forecasts Mean for Your Healthspan

A sweeping new analysis across 23 high-income countries says the steady climb in lifespan is losing steam. Here's what that actually means for the choices you make now.