I don't understand why brain transplants don't seem to be a high priority for anti-ageists. It seems putting an old brain into the head of a clone would solve like half of all medical issues all at once. The other half would be extremely messy to deal with, maybe impossible, but first things first, no? Is there any serious work that's been done on this that I've overlooked? If not, why? Ethics boards, maybe?
Look at the prevalence of Alzheimer's as a function of age:

Until you solve that particular problem, transplanting brains seems to be pointless.
Another month, another rationality quotes thread. The rules are: