Medicine became big business with the expansion of new, higher-cost treatments and the increased numbers of health care providers in the United States. As more health care providers entered the market, competition increased among ① them Interestingly, the increase in competition led health care providers to recommend more services to the persons ② they served. This phenomenon reflects a unique feature in the health care industry ―provider-induced demand, which allows health care providers to maintain ③ their income even as competition increases. Average consumers of health care do not know how to diagnose ④ their medical conditions and do not have a license to order services or prescribe medications. So consumers rely on the knowledge of health care providers to determine what services are needed, even though ⑤ they stand to make more money by ordering more services.