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 Alcohol and Drug Use in Young People, Drug Use and Your Health, or Alcohol: Drinking and Your Health.
|Primary Medical Reviewer||Patrice Burgess, MD - Family Medicine|
|Primary Medical Reviewer||Andrew Swan, MD, CCFP, FCFP - Family Medicine|
|Specialist Medical Reviewer||Peter Monti, PhD - Alcohol and Addiction|
|Last Revised||September 21, 2012|
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