We humans, being self-aware, are keenly concerned about death. We have sought the so-called fountain of youth since time immemorial. As the pace of science accelerates we find ourselves at the threshold of an era where we just may start artificially lengthening human lifespan.
Hormesis is a little-known term with huge implications. It refers to a fascinating phenomenon: a favorable biological reaction to low doses of chemical toxins, radiation or some other form of stress that is damaging, even fatal, in higher doses.