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The following are some obvious signs that a person may be smoking cigarettes, drinking alcohol, or using other substances. This is not a complete list of signs to look for. If you suspect a particular drug or drugs, get more information on signs of use for those substances. For more information, see Teen Alcohol and Drug Abuse.
Last Revised: July 20, 2012
Author: Healthwise Staff
Medical Review: Patrice Burgess, MD - Family Medicine & Peter Monti, PhD - Alcohol and Addiction
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