Lifespan is how long you live, while healthspan is the years you stay healthy...

https://wiki-tonic.win/index.php/What_Is_Marc_Kielburger_Known_For_and_Why_Is_He_in_Longevity_News%3F

Lifespan is how long you live, while healthspan is the years you stay healthy and active. The U.S. faces a 12.4-year gap between lifespan and healthspan, meaning many years with illness