I thought that looking at some drug information might be useful. I selected some questions from the entire presentation found at
http://www.nida.nih.gov/MarijBroch/Marijteenstxt.html
to present on this page.
Q: Why do young people use marijuana?
A: There are many reasons why some children and young teens start smoking marijuana. Many young people smoke marijuana because they see their brothers, sisters, friends, or even older family members using it. Some use marijuana because of peer pressure.
Others may think it’s cool to use marijuana because they hear songs about it and see it on TV and in movies. Some teens may feel they need marijuana and other drugs to help them escape from problems at home, at school, or with friends.
No matter how many shirts and caps you see printed with the marijuana leaf, or how many groups sing about it, remember this: You don’t have to use marijuana just because you think everybody else is doing it. Most teenagers do not use marijuana!
Q: What are the short-term effects of marijuana use?
A: The short-term effects of marijuana include:
problems with memory and learning (11);
distorted perception (sights, sounds, time, touch) (6);
trouble with thinking and problemsolving (5);
loss of motor coordination; and
increased heart rate.
These effects are even greater when other drugs are mixed with the marijuana; and users do not always know what drugs are given to them.
Q: How can you tell if someone has been using marijuana?
A: If someone is high on marijuana, he or she might
seem dizzy and have trouble walking;
seem silly and giggly for no reason;
have very red, bloodshot eyes; and
have a hard time remembering things that just happened.
When the early effects fade, over a few hours, the user can become very sleepy.
Q: How does marijuana affect driving?
A: Marijuana has serious harmful effects on the skills required to drive safely: alertness, concentration, coordination, and reaction time. Marijuana use can make it difficult to judge distances and react to signals and sounds on the road.
Marijuana may play a role in car accidents. In one study conducted in Memphis, TN, researchers found that, of 150 reckless drivers who were tested for drugs at the arrest scene, 33 percent tested positive for marijuana, and 12 percent tested positive for both marijuana and cocaine (1). Data have also shown that while smoking marijuana, people show the same lack of coordination on standard “drunk driver” tests as do people who have had too much to drink (8).
Q: Can people become addicted to marijuana?
A: Yes. Long-term marijuana use can lead to addiction in some people. That is, they cannot control their urges to seek out and use marijuana, even though it negatively affects their family relationships, school performance, and recreational activities (9). According to one study, marijuana use by teenagers who have prior antisocial problems can quickly lead to addiction (3). In addition, some frequent, heavy marijuana users develop “tolerance” to its effects. This means they need larger and larger amounts of marijuana to get the same desired effects as they used to get from smaller amounts.
This is the entire reference list for the entire article.
References
1. Brookoff, D.; Cook, C. S.; Williams, C.; and Mann, C. S. Testing reckless drivers for cocaine and marijuana. New England Journal of Medicine, 331:518-522, 1994.
2. Cornelius, M. D.; Taylor, P. M.; Geva, D.; and Day, N. L. Prenatal tobacco and marijuana use among adolescents: effects on offspring gestational age, growth, and morphology. Pediatrics, 95: 738-743. 1995.
3. Crowley, T. J.; Macdonald, M. J.; Whitmore. E. A.; and Mikulich, S. K. Cannabis Dependence, Withdrawal, and Reinforcing Effects Among Adolescents With Conduct Symptoms and Substance Use Disorders. Drug and Alcohol Dependence, 1998.
4. Fletcher, J. M.; Page, J. B.; Francis, D. I.; Copeland, K.; Naus, M. J.; Davis. C. M.; Morris, R.; Krauskopf, D.; and Satz, P. Cognitive correlates of long-term cannabis use in Costa Rican men. Arch. of General Psychiatry, 53: 1051-1057, 1996.
5. Harder. S. and Reitbrock, S. Concentration-effect relationship of delta-9-tetrahydrocannabinol and prediction of psychotropic effects after smoking marijuana. International Journal of Clinical Pharmacology and Therapeutics, 35(4): 155-159, 1997.
6. Jones, R.T. et al. Clinical relevance of cannabis tolerance and dependence. Journal of Clinical Pharmacology, 21 (Suppl 1): 143-152,1981.
7. Kandel, D.B. Stages in adolescent involvement with drugs. Science, 190:912-914, 1975.
8. Liguori, A.; Gatto, C. P.; and Robinson, J. H. Effects of marijuana on equilibrium. psychomotor performance, and simulated driving. Behavioral Pharmacology, 9:599-609, 1998.
9. National Association of State Alcohol and Drug Abuse Directors, Inc.. State Resources and Services Related to Alcohol and Other Drug Problems for Fiscal Year 1995: An Analysis of State Alcohol and Drug Abuse Profile Data, July 1997.
10. National Institute on Drug Abuse. National Survey Results on Drug Use from The Monitoring The Future Study, 1975-1997, Volume I/Secondary School Students. NIH Publication No. 98-4345. Printed 1998.
11. Pope, H. G. and Yurgelun-Todd, D. The Residual Cognitive Effects of Heavy Marijuana Use in College Students. Journal of the American Medical Association, Vol 275, No. 7, February 21, 1996.
12. Rodriguez de Fonseca, F.; Carrera, M. R. A.; Navarro, M.; Koob, G. F.; and Weiss, F. Activation of Corticotropin-Releasing Factor in the Limbic System During Cannabinoid Withdrawal. Science, Vol. 276, June 27, 1997.
13. Substance Abuse and Mental Health Services Administration, Office of Applied Sciences. Preliminary Results From the 1996 National Household Survey on Drug Abuse. DHHS No. (SMA) 97-3149. Rockville, MD: SAMHSA, July 1997.
14. University of Michigan. News and Information Services. Drug use among American teens shows signs of leveling after a long rise. December 18, 1997.
15. Wu, T. C.; Tashkin, D. P.; Djahed, B.; and Rose, J.E. Pulmonary hazards of smoking marijuana as compared with tobacco. New England Journal of Medicine, 318: 347-351, 1988.