Remember LEV does not mean we stop aging, it means we are at the point when 1year of medical advancement produces 1year of additional life expectancy. When we reach LEV you won't see old people walking into a hospital and young people walking out. What you will see is older people being prescribed drugs that have been shown to improve life expectancy by about 1 to 2 years for the sole purpose of extending life. What happens in those additional 1 to 2 years is more of the same but every year the gains get greater until we reach a point when we can reverse ageing. It may be decades between LEV and being able to reverse ageing.