Unfortunately, in the real world, things don’t always work this way. Doctors and patients have a number of masters, both welcomed and uninvited. Insurance companies or other third-party payers often intrude into the decision-making process, limiting the choices of what services and products might be available: a sick patient often must wait for pre-authorization for expensive diagnostic tests and procedures; pharmacy formularies restrict the kinds of drugs available for prescriptions, and so on. Furthermore, some doctors have personal interests in the interventions they recommend. Many surgeons make more money if they do more surgery, cardiologists earn more if they put in more cardiac stents and pacemakers, and drug companies have better profits if they sell drugs for chronic conditions that never get better and require lifelong medication (such as high cholesterol, hypertension, and diabetes). Such practices contribute to the seeming inexorable rise in health care costs (and a host of adverse outcomes) in the United States.
Yet controlling cost without sacrificing quality has been a daunting task. One strategy might be to pay more attention to what patients need, and less to what they want, assuming that the two don’t overlap. Another is limiting the excess of doctors who prescribe because of conflicts of interest or acts of “defensive medicine” — in other words, to protect themselves from lawsuits, not aid the patient.