Twenty years ago little was known about the aging process. Many ideas existed but nothing was certain. Today we know how and why we age. We cannot control it just yet, but even that may change in the near future.
"Cortisol switch" is when you flip from the cortisol love -- which is where cortisol is helping you be productive, helping you focus, helping you feel on top of the world -- to the cortisol hate. You hit the wall.
New work calls into question the standard model used to assess potentially negative impacts of drugs. If this analysis is correct, we may well be greatly misunderstanding long-term interactions drugs can have on our bodies, both with respect to cancer formation and significant tissue damage.