Healthspan means the years you live in good health, not just the total years...

https://www.bookmarking-online.win/healthspan-is-about-living-the-healthiest-years-you-can-not-just-the-longest

Healthspan means the years you live in good health, not just the total years you’re alive. While the U.S. sees a 12.4-year gap between lifespan and healthspan, meaning many years with illness, purpose and connection can help close that gap