• In 2008, 6.9% of the population aged 12 or older (17.3 million people) reported being heavy drinkers.
Substance Abuse and Mental Health Services Administration
 
• Alcohol is a factor in approximately 41% of all deaths from motor vehicle crashes.
Centers for Disease Control and Prevention

• Excessive alcohol consumption is associated with approximately 75,000 deaths per year.
Centers for Disease Control and Prevention

• In 2008, an estimated 3.9 million people used marijuana on a daily or almost daily basis.
Substance Abuse and Mental Health Services Administration
 
• In 2008, nearly 1/10 of all drug-related emergency department visits made by adolescents aged 12 to 17 involved a suicide attempt.
Substance Abuse and Mental Health Services Administration
 
• 1 in 4 adults suffers from a diagnosable mental disorder in a given year.
National Institute of Public Health
 
• Almost half those diagnosed with one mental disorder meet criteria for two or more disorders.
National Institute of Public Health