43.7 Million Americans experienced mental illness in 2012
Nearly one in five American adults, or 43.7 million people, experienced a diagnosable mental illness in 2012 according to the Substance Abuse and Mental Health Services Administration (SAMHSA). These results are consistent with 2011 findings.
Read more from SAMHSA at http://www.samhsa.gov/newsroom/advisories/1312181201.aspx