In the life extension movement, longevity escape velocity (LEV), actuarial escape velocity[2] or biological escape velocity[3] is a hypothetical situation in which one's remaining life expectancy (not life expectancy at birth) is extended longer than the time that is passing. For example, in a given year in which longevity escape velocity would be maintained, medical advances would increase people's remaining life expectancy more than the year that just went by.
The term is meant as an analogy to the concept of escape velocity in physics, which is the minimum speed required for an object to indefinitely move away from a gravitational body despite the gravitational force pulling the object towards the body.
- ^ Aubrey de Grey, A roadmap to end aging. In: TEDGlobal 2005.
- ^ "Actuarial Escape Velocity". The Futurist. 2008-03-25.
- ^ Palmer, Raymond D. (December 12, 2022). "Three Tiers to biological escape velocity: The quest to outwit aging". Aging Medicine. 5 (4): 281–286. doi:10.1002/agm2.12231. PMC 9805293. PMID 36606268.
there are three distinct classes of longevity and anti-aging technologies that are emerging globally, and the ability of each class is clearly apparent in fending off aspects of biological decay. Tier 3, however, reigns supreme in rejuvenation therapies that may make up future pathways to reach biological escape velocity.