These include low sperm counts, impaired immune system functioning, chronic bronchitis, chronic obstructive lung disease, impaired memory, and motivational syndrome. There is clear evidence that marijuana is a psychologically addictive drug. They cause hallucinations and abnormal sensory feelings involving colors, lights, and sounds, which are influenced by the environment in which the user takes the drug. After use, frightening flashbacks can occur, and during use, impaired mental function can cause accidents involving injury or death. Psychological dependence may also develop.
Treatment consists of reassurance counseling and certain medications.
Narcotics like heroin, codeine, morphine, demerol, and talwin, are highly addictive drugs. They act on the central nervous system to reduce sensitivity to pain. They produce a rush and then euphoria. Withdrawal is painful and dangerous. In a short period of time, users develop physical addictions that require feeding their habit every three to six hours to avoid withdrawal symptoms.