“Between 2000 and 2011, increase in price (particularly of drugs, medical devices, and hospital care), not intensity of service or demographic change, produced most of the increase in health’s share of GDP,” the authors write.

The costliest disease with the fastest growth rate was hyperlipidemia—high cholesterol and triglycerides—for which spending grew by 14.4 percent annually between 2000 and 2010.

The U.S. doesn't have the best healthcare system in the world.

This is a frequent point that Obamacare opponents make when advocating for the status quo, but in fact, much of the southern U.S. has a life expectancy that’s lower than average for the OECD, a set of industrialized nations that’s commonly used for comparison. And while Americans rate their experiences with the U.S. healthcare system as generally positive, other countries within the OECD are just as satisfied, even though their medical care is much cheaper than ours.

Spending more on IT is not necessarily making our health system more cost-efficient.

JAMA

Both government and private spending on IT has been ramping up over the last decade, and it now adds up to about 3 percent of hospital or doctors’ office expenditures.

In short, your doctor now has an iPad! But does that actually help patients?

It’s true that some health systems, such as the VA and Kaiser Permanente, have used things like electronic medical records to better coordinate care, resulting in less paperwork for the patients and better communication among specialists.

But health IT’s impact on cost reduction is less apparent, the authors note. In the U.S., billing and administrative costs still account for 13 percent of healthcare revenue, compared with 6.6 percent in Canada, to name just one example.

“Information technology investments may have reduced costs from what they would otherwise have been,” the authors note, “and likely only partially account for their enormity, but have not made U.S. system administration efficient by any measure.

The rate of increase in medical costs has actually slowed.

JAMA

Healthcare is expensive and getting more so, but since 1970, the rate of yearly increase in healthcare costs has declined, particularly since 2002. The authors partly attribute this decrease to the recession.

Consumers aren't the ones paying for an increasing share of medical costs.

Though it often may feel like out-of-pocket expenses are growing disproportionately to the cost of healthcare, Medicare, Medicaid, and federal employee plans have actually picked up an increasingly larger share of the tab.

Personal out-of-pocket spending declined by half since 1980 (from 23 percent to 11 percent). Both commercial payers (insurance companies) and the government (through Medicare and Medicaid), meanwhile, are now responsible for 90 percent of hospital and physician costs.

JAMA

Ultimately, the authors conclude that physicians, patients, and insurers all want different things from healthcare. The patient wants to see the best doctors and get the best treatments available, the insurer wants to save money and send the patient to less-expensive doctors, and doctors want to preserve autonomy and ensure they’re getting paid fully for all the services they provide. How we resolve the tension between those different desires will determine what American medicine looks like—and how much it costs—in future years.