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

https://www.golf-bookmarks.win/healthspan-focuses-on-the-years-you-live-in-good-health-not-just-how-long-you

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