More drugs, more tests, more surgery.
A report by the U.S. Centers for Disease Control and Prevention shows that the use of high-tech medical tests and surgeries has escalated rapidly over the past decade in the United States. But whether the expanding presence of medical technology is a good thing is still a matter of debate.
The rates of Americans getting MRIs and CT scans tripled between 1996 and 2006, according to the report released today from the National Center for Health Statistics. CT scans can help doctors detect everything from kidney stones to cancer, but they pack a mega dose of radiation -- as much as 500 times that of a conventional X-ray, which some health experts say raises the risk for cancer.
More Americans are also going under the knife. According to the report, the rate of knee replacement procedures increased 70 percent over the decade studied; kidney and liver transplants increased by 31 percent and 43 percent, respectively.
What's more, Americans are also on more drugs now than in years past: 47 percent of the population in 2006 was taking at least one prescription drug, compared to 38 percent in 1994. About one in five Americans in 2006 were taking three or more prescriptions -- nearly double that in 1994.
Of course, increased use of new medical technology and a spike in the use of prescription drugs has occurred alongside a continual increase in life expectancy and decrease in death rates for cancer, heart disease, and stroke. The connection between these two trends remains unclear, however, experts say.
Still, considering the overall rise in life expectancy, some doctors say Americans are more healthy for the increase in medical interventions.
"Death rates are down for things like heart disease and stroke, which I would suspect has to do with better diagnosis [through diagnostic imaging technology] and people going on preventive medications like statins," says Dr. Daniel Kopans, director of the Breast Imaging Division at Massachusetts General Hospital. The CDC found a ten-fold increase in the use of statin drugs from 1988-1994 to 2003-2006.
But according to Dr. Nortin Hadler, professor of Medicine and Microbiology/Immunology and the University of North Carolina at Chapel Hill and author of "Worried Sick" and "The Last Well Person," "We may be fooling ourselves as a society" in thinking that all this technology is actually making us live longer.
"The decrease in premature death can be traced back long before we had many important interventions," Hadler says. "[It is] not clear that all of our high-tech knowledge is responsible for this. ... The data is consistent that if we never perform a single stent or angioplasty, we would not change the happy outcome of fewer people having and/or dying from heart attacks."
Still, he says, most in the public assume that the high-tech interventions are responsible, which drives up demand.
"Our society has learned that we are technologically dependent for our longevity. So you put together this notion that without all the high-tech we would all be in big trouble and the fact that advantaged areas of society are living longer and you have a perfect marketing storm," he says.