Healthspan is the years we live in good health, while lifespan is total years...

https://zanessplendidcolumns.opalvector.com/posts/how-to-read-a-health-headline-about-longevity-without-getting-fooled

Healthspan is the years we live in good health, while lifespan is total years lived. The US sees a 12.4-year gap between lifespan and healthspan, meaning many live longer but with illness