"Life longevity" refers to the length of time that a person or living organism is able to live. It implies how long someone can stay alive and healthy, or the duration of their life. Full definition
Coffee is high in antioxidants, improves mood, and studies show that it can increase life longevity + alleviate certain diseases if consumed daily. (clearskinbynature.com)
They are capable of lifting spirits and increasing life longevity. (dogingtonpost.com)
Seegmiller's clinical activities included studies in life longevity in South America. (health.ucsd.edu)