Anyone interested in aging science should listen to both of these episodes of Peter Attia’s podcast:

https://peterattiamd.com/richardmiller/ https://peterattiamd.com/richardmiller2/

In-depth discussions of a brilliantly designed mouse experiment they’ve been running annually for decades. I particularly appreciate the discussion of the mystery of the excess longevity of the male Michigan control group mice. Great illustration of just how devilishly difficult it is to do this kind of research.