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

https://highstylife.com/183-who-member-states-study-what-did-researchers-compare-exactly/

Healthspan means the years you live in good health, not just how long you live. On average, people worldwide face a 9.6-year gap between lifespan and healthspan, and in the U.S., it’s even bigger at 12.4 years