Marijuana users entering substance abuse treatment in the U.S. are most likely single.
The purer the heroin, the whiter it is, and variations in color signify the presence of impurities.
Use of barbiturates decreases REM (rapid eye movement) sleep, during which dreaming takes place, and therefore withdrawal often results in sleep disruptions such as nightmares, insomnia, or vivid dreaming.
Older children of alcoholics are more likely to experience symptoms of depression and anxiety such as staying in their rooms for long periods of time and not relating to other children, claiming they "have no one to talk to."