A new analysis shows that the 2014 increase in national health expenditures is mostly attributable to 10.6 million Americans gaining health coverage, not an increase in the price of health services or health care spending per insured American. The report, prepared by researchers at the Urban Institute with funding from the Robert Wood Johnson Foundation, illustrates that without the recent Affordable Care Act (ACA) coverage expansions—through Medicaid and the insurance marketplaces—the rate of growth in health spending would have been close to the growth rate in gross domestic product (GDP).