If phrasing it as living longer isn't working, don't phrase it that way. Maybe phrase it as staying healthy or attractive longer? People have a very strong reve

If phrasing it as living longer isn't working, don't phrase it that way. Maybe phrase it as staying healthy or attractive longer? People have a very strong revealed preference for those things, judging by the amount of money they spend on products that claim to provide them but don't actually work.