Among the 277 pairs who were discordant for marijuana dependence (that is, one twin but not the other met the criteria for a diagnosis of marijuana dependence), the dependent twins were 2.9 times as likely as their nondependent co-twins to think about suicide without attempting it, and 2.5 times as likely to make a suicide attempt. While individuals over the age of 30 continue to make up the majority of heroin addicts in the United States, the fast growing heroin demographic is among young people age 17-21. Meth is a powerful stimulant drug that increases brain activity. Short term effects, lasting up to 12 hours, include increased alertness, insomnia, hyperactivity, headache, decreased appetite, irritability, aggression, anxiety, nervousness, teeth grinding, convulsions and heart attack. Chronic abuse can lead to tooth decay, acne and skin sores (speed bumps), psychotic behavior, paranoia, hallucinations, rage, extreme violence, depression, fatal kidney and lung disorders and brain damage. Babies born to meth-using moms can be born addicted to meth and suffer birth defects, low birth weight, tremors and behavior disorders. If a dependent user reduces or stops use of the drug abruptly, they may experience severe symptoms of withdrawal. These symptoms, which can begin as early as a few hours after the last drug administration, include restlessness, muscle and bone pain, insomnia, diarrhea and vomiting, cold flashes with goose bumps (“cold turkey”), kicking movements (“kicking the habit”), and other symptoms. Users also experience severe craving for the drug during withdrawal, precipitating continued abuse and/or relapse. |
