Of the over 22 million Americans who were classified with substance dependence or abuse in 2010, 2.9 million were dependent to or abused both alcohol and illicit drugs, 4.2 million had dependence or abuse of illicit drugs but not alcohol, and 15.0 million had dependence or abuse of alcohol but not illicit drugs.
Over 50% of all active duty military personnel report binge drinking in the past month,
After the beginning of alcohol withdrawal, symptoms get worse in 48-72 hours and may continue to plague the individual for weeks.
Some Ecstasy users experience forceful clenching of the teeth as a result of using the drug, and individuals at clubs have been known to chew on pacifiers to relieve some of the tension.