Peter Attia asserts that healthspan is as important as lifespan, noting that increased life length has not necessarily resulted in a doubling of life quality.

“what's abundantly clear is that while our length of life has indeed doubled as you stated Neil from about 40 to 80 since 1900 it's not clear that that has come with a doubling in the quality of life”

Targeting the biological processes of aging is likely to increase both healthspan and lifespan simultaneously.

“if we target the biology of Aging I haven't seen anything to make me believe that you can separate Health span and life Anan meaning that I haven't seen things that slow aging increase lifespan don't increase health span”