Aging clocks aim to predict how long you’ll live
Age is much more than the number of birthdays you’ve clocked. Stress, sleep, and diet all influence how our organs cope with the wear and tear of everyday life. Factors like these might make you age faster or slower than people born on the same day. That means your biological age could be quite different from your chronological age—the number of years you’ve been alive.
Your biological age is likely a better reflection of your physical health and even your own mortality than your chronological age. But calculating it isn’t nearly as straightforward. Scientists have spent the last decade developing tools called aging clocks that assess markers in your body to reveal your biological age.
The big idea behind aging clocks is that they’ll essentially indicate how much your organs have degraded, and thus predict how many healthy years you have left. Among the hundreds of aging clocks developed in the last decade, though, accuracy varies widely. And researchers are still grappling with a vital question: What does it mean to be biologically young? Read the full story.