We've doubled life expectancy by lowering the rates of early deaths. Even in antiquity, healthy people lived to their 60s. That might be the 70s or 80s now, b

We've doubled life expectancy by lowering the rates of early deaths. Even in antiquity, healthy people lived to their 60s. That might be the 70s or 80s now, but the quality of life at those ages isn't great - take a stroll to your local elderly home.