First, to even apply to medical school, you need a completely unrelated 4 year undergrads. Then there's residency where, let's face it, it's more of a contest of who can sleep the least and impress whoever's in charge and not at all about learning.
As I understand it, doing high-level medical research requires an enormous amount of training - think of it, if you will, as on boarding into the insanely complex and poorly commented legacy system that is the human body. As an engineer I would much rather just throw it out and do a rewrite, but of course that’s not how any of this works. Probably there are very few careers where this amount of training is meaningful.
First, to even apply to medical school, you need a completely unrelated 4 year undergrads. Then there's residency where, let's face it, it's more of a contest of who can sleep the least and impress whoever's in charge and not at all about learning.