Healthspan is how long you live healthy and active, not just how long you live....

https://source-wiki.win/index.php/How_Do_I_Calculate_My_Own_Healthspan_Without_Fancy_Tests%3F

Healthspan is how long you live healthy and active, not just how long you live. On average, people worldwide live about 9.6 years with illness or disability, and in the U.S., that gap is even wider at 12.4 years