I’ve come to see a future in which we can plan ahead to fend off some of the adverse effects of aging; a future in which we can harness what we know about neuroplasticity to write our own upcoming chapters the way we want them to unfold; a future in which a combination of medical developments and healthy lifestyle choices can temper or reverse the effects of cognitive decline, depression, and loss of energy that we have for too long assumed were a nonnegotiable part of the aging process. That future is to a large degree already here for those who are willing to harness it.
