HONESTLY, I’M SKEPTICAL ABOUT THIS, THOUGH I’D LIKE IT TO BE TRUE: Rapamycin Redux. “Rapamycin is presently the best candidate we have for a drug to extend life in humans. It is expected to extend ‘health span’ as well as lifespan, lowering incidence of cancer, heart disease and stroke. But is it ‘safe and effective’ for use in people? We may never know, because its patent has run out, and there is no company motivated to invest the cost of a human trial.”