Hi there,
What percentage of the US population is classified as depressed and on
anti-depression medication?
Thanks

Hello.

About 9.5 percent of U.S. adults suffer from a depressive illness in
any given year, according to statistics cited by the National
Institute of Mental Health, a U.S. government agency.

"In any given 1-year period, 9.5 percent of the population, or about
18.8 million American adults, suffer from a depressive illness."
source: National Institute of Mental Health
http://www.nimh.nih.gov/publicat/depression.cfm

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In 2002, The New York Times reported that 7.1 million Americans took
antidepressants in the previous year.

"Last year, according to NDCHealth, a company that tracks drug sales,
7.1 million Americans took antidepressants, an increase of 700,000
over the year before."
source: The New York Times, June 30, 2002:
"Antidepressants Lift Clouds, but Lose 'Miracle Drug' Label"
By ERICA GOODE 
Reprinted on biopsychiatry.com
http://www.biopsychiatry.com/antidepressants/antidepressant.html

The 7.1 million Americans who took antidepressants in 2001 represented
about 2.5 percent of the U.S.'s total population of around 290
million.

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search strategy:
"percent of the population" depressed
"million americans", antidepressants

I hope this helps.

Thank you for the quick answer.