Healthspan is how long you live free from serious illness, while lifespan is...

https://fun-wiki.win/index.php/Healthspan_vs_Lifespan:_Why_Do_People_Talk_About_the_Gap_Now%3F

Healthspan is how long you live free from serious illness, while lifespan is total years lived. Globally, there's a 9.6-year gap between these two, and in the US, it’s even wider at 12.4 years