Substance Abuse & Mental Illness in U.S. Adults

A combined 63.8 million adults 18 and older in the United States had either a substance use disorder or a mental illness in the past year. One in 12 adults had a substance use disorder and 1 in 5 adults had a mental illness in the past year. About 12% of these adults (7.9 million) experienced both a substance use disorder and a mental health issue. This is known as having a co-occurring behavioral health disorder.