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

https://www.medicaldaily.com/marc-kielburger-healthspan-vs-lifespan-why-purpose-belongs-longevity-conversation-478751

Healthspan means the years you live in good health, not just how long you live. The global gap between lifespan and healthspan is 9.6 years—time spent with illness or disability