...[T]he best here is medical journalist Shannon Brownlee's argument that health care is screwed up not because we don't ration care like Canada; or that malpractice lawsuits are to blame; or that absurd administrative costs raise insurance costs; or that consumers don't shop wisely since we often don't pay out of pocket. 

No, she contends that over-treatment is to blame not only for high costs but for often making us more sick, suggesting we spend $500 billion a year on unnecessary care...LINK