Research shows that “there's no evidence annual physicals for healthy people are useful.” Yet the vast majority of doctors give them anyway, with “65 percent of primary care doctors think[ing] they are necessary.”
This demonstrates several things about healthcare:
(1) Spending more money on healthcare doesn’t make us healthier if it's spent useless physicals and tests.
(2) Doctors make money when they see patients, so why are we surprised if they encourage people to pay for useless visits and tests?
(3) Doctors actually have no clue about what’s going on in medical research, and like most Americans lack the ability to think logically. Depend on your doctor to diagnose your symptoms if something is wrong with you, but don’t believe a word they say when they have general advice on what’s healthy. (For example, doctors are still giving bad advice about what's the correct weight.)