When the earth is billion, even benign things kill millions. Air pollution kills millions. Cancer for any given age demographic have exploded LIKE A NUCLEAR BOMB. So it’s not lifespan. Cancers of all kinds have exploded, even the ones that were diagnosed before. We didn’t all of a sudden diagnose cancer in 1970. Or diabetes or obesity. And what do you say about communities of people that have almost none of these diseases? It’s not genetics… and they all live in a primitive way. And when these communities adopt western technology and food they start getting sick. But it’s all just an illusion… screening. Sure.