I love reading popular non-fiction about healthcare/medicine, e.g. Atul Gawande's books, The Spirit Catches You and You Fall Down, etc. To a slightly lesser extent I've also enjoyed books about the history of medicine like The Ghost Map.
I'm looking for book recommendations along two veins:
1) Other popular non-fiction books about healthcare and medicine that are really great
or really popular
(I add the "really popular" stipulation because I want to be "fluent" in this stuff and reach a point where I've read most of what everyone else has read), and more importantly,
2) I want to go deeper. What is there between, say, Complications
and the New England Journal of Medicine?