Healthcare is the largest industry in the United States, accounting for approximately $1.4 trillion in sales of goods and services in 2000, about 14 percent of U.S. gross domestic product (GDP).  It is the nation's largest employer--one of every nine U.S. employees works in the healthcare industry. In addition to its economic importance, healthcare remains a critical element of national security. The state of public health directly affects the ability of a nation to project economic, political, and military power to protect its national interests. The U.S. healthcare industry sets the quality standard for the world, nonetheless there are significant concerns about rising medical costs, the number of un- and underinsured citizens, and the ethical and security concerns of using technology to improve medical services.
Industry Studies 2001