The argument is that modern medicine is very good at the last two years of life and close to useless at the thirty before them. Medicine 2.0 treats disease once it arrives. Medicine 3.0 would treat the slow slide toward it.
Four things kill most of us: heart disease, cancer, neurodegenerative disease, and metabolic dysfunction. All four start decades before diagnosis, which is the whole point of the book.
The centenarian decathlon is the practical bit. Decide what you want to physically be able to do at eighty, then work backwards to what that requires now.
It is long, and the chapter on emotional health reads like it was added late. I would still hand it to anyone turning fifty.
Read July 2023.