From Our 2009 Archives
Antidepressant Use Nearly Doubles
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Researchers Find Antidepressant Use Up, Psychotherapy Down
Reviewed By Brunilda Nazario, MD
Aug. 3, 2009 -- Antidepressant use has nearly doubled in the U.S, according to a new study.
"I expected there to be an increase [in antidepressant use], but I didn't expect the increase to be as large as we actually found," says Mark Olfson, MD, MPH, professor of clinical psychiatry at New York State Psychiatric Institute of Columbia University, who co-authored the study with Steven C. Marcus, PhD, of the University of Pennsylvania, Philadelphia.
"Ten percent of the population is being treated with an antidepressant during the course of a year," he says. That compares to 5.8% in 1996, he found.
Although part of the uptick can be linked to the fact that mental health treatment is becoming more common and accepted, Olfson tells WebMD that he fears the medications may sometimes be prescribed "in a casual way."
The study appears in the Archives of General Psychiatry.
Antidepressant Use Trends: Study Details
Olfson and Marcus analyzed data from the Medical Expenditure Panel Surveys, sponsored by the Agency for Healthcare Research and Quality, which provides national estimates in the U.S. about health care use and costs.
For the 1996 survey, nearly 19,000 people aged 6 and older were included, and more than 28,000 in the 2005 survey. A designated adult in each household answered questions about prescribed medications, medical visits, and other information.
The rate of antidepressant treatment increased from 5.84% to 10.12% -- or from 13 million people to about 27 million, the researchers found.
One exception to the trend involved African-Americans. "African-Americans really did stand out as one group that didn't experience a significant increase in antidepressant use," Olfson says. In 1996, 3.6% of African-Americans surveyed were on antidepressants and 4.5% in 2005.
Another important finding, Olfson says, is that fewer people on antidepressants surveyed in 2005 also took part in psychotherapy or "talk therapy." Although 31.5% of those surveyed in 1996 on antidepressants also did talk therapy, just 19.8% of those surveyed in 2005 both took antidepressants and participated in psychotherapy.
Often, the two are recommended together for depression.
Antidepressant Use Trends: Study Interpretations
The researchers say a number of factors explain the increasing use of antidepressants. "There has been broad and growing acceptance of antidepressant medicine in the U.S.," Olfson tells WebMD.
In an unrelated survey released last week, researchers found that American attitudes toward psychiatric medicines are becoming more positive. The researchers compared the responses of people in surveys done in 1998 and 2006.
Other factors explaining the increase, according to Olfson:
The lower increase in antidepressant use among African-Americans may be cultural, Olfson says, with a tendency to embrace psychotherapy over medication. "There is also some evidence that African-Americans as compared to whites have lower rates of depression," he says. That may be part of the story as well."
Antidepressant Use Trends: Second Opinion
Another expert says the research seems to have both encouraging and not-so-encouraging implications.
The encouraging implication is that "people are not so embarrassed, that they are more open to seeking help for depression," says Eric Caine, MD, the John Romano Professor and chair of the Department of Psychiatry, University of Rochester Medical Center, Rochester, N.Y., who reviewed the study for WebMD.
The fall in psychotherapy use found in the Olfson study, however, is a concern, Caine says. "In mild to moderate depression, psychotherapy is as good as or better than medications," Caine says. He emphasizes that the antidepressants are lifesavers for some and sometimes needed. But, he adds, "in the population as a whole, most depression is mild or moderate."
Antidepressant Use: Take-Home Point
Deciding to take an antidepressant should be treated by the prescribing physician and the patient as an important one, Olfson says. "Know that it requires monitoring," he says, "and to have symptoms followed over time."
"There is a risk out there of 'casual' prescriptions," Olfson says. "The risk is that people will get these medications but not the surrounding attention and care that we know is needed to have the very best outcome."
SOURCES: Mark Olfson, MD, MPH, professor of clinical psychiatry at the New York State Psychiatric Institute of Columbia University, New York, NY. Olfson, M. Archives of General Psychiatry, August 2009, vol. 66: pp.848-856. Eric Caine, MD, the John Romano Professor and chair of the Department of Psychiatry, University of Rochester Medical Center, Rochester, NY. Mojtabai, R. Psychiatric Services, August 2009; vol 60.
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