Physical and Mental Damage

Fiction:  Marijuana is very safe.

“Medical” marijuana advocates claim that marijuana use has little ill effect on health; and that marijuana has a very wide margin of safety, less negative side-effects and is better tolerated by patients than other prescription pain medications.

Fact:  Recent science shows that marijuana has many dangerous qualities

Marijuana legalization advocates would have you believe that crude marijuana is "medicine" and that it is not a harmful drug. The scientific studies state the contrary. Recent studies show the following destructive effects of marijuana use:

“Medical” marijuana advocates claim that there is no harm to the immune system caused by marijuana and that research on HIV/AIDS patients shows no sign of marijuana related harm and does not worsen their disease

Fact:  Marijuana hurts the immune system

One of the earliest findings in marijuana reserch was the effect on various immune functions.  Research has documented in humans the impairment of cellular and pulmonary immunity, and the ability to fight infections.  Examples are the findings of an inability to fight herpes infections and the discovery of a blunted response to therapy for genital warts during cannabis consumption.  Abnormal immune function is the cornerstone of problems with AIDS.  This impairment leaves the patient unable to fight certain infections and fatal diseases.  The potential for these complications exists in all forms of administration of marijuana.

A recent study shows that a marijuana component opens the door for the virus that causes Kaposi's Sarcoma, a cancer that causes patches of abnormal tissue to grow under the skin.

Marijuana Addiction

Fiction:  Marijuana is not addictive.

“Medical” marijuana advocates claim that marijuana is not addictive and that in any case people are permitted to use addictive medicines when prescribed by a doctor.

Fact:  Marijuana is addictive

Marijuana is an addictive drug that poses significant health consequences to its users, including those who may be using it for so-called medical purposes. Despite arguments from the drug culture to the contrary, marijuana is addictive. Among youths, 42.0 % reported that at least a few of their friends used marijuana, with 11.7 % reporting that most or all of their friends were marijuana users.

Marijuana is far more powerful today than it was 30 years ago, and it serves as a gateway for the use of other illegal drugs. Unlike those addicted to many other drugs, the marijuana addict is exceptionally slow to recognize the addiction. This addiction as described in the marijuana literature consists of both a physical dependence (tolerance and subsequent withdrawal) and a psychological habituation.  While the addictive properties are probably a minimal issue for chemotherapy associated nausea, it is a major issue for the chronic use necessary for glaucoma, AIDS wasting syndrome, and other alleged chronic applications. There are a number of FDA approved medications that can be used that are not addictive, less harmful, and more effective.

The scientifc studies of marijuana dangers are listed by category below. If you want any of the actual studies, please contact us.


Risk of Selected Birth Defects with Prenatal Illicit Drug Use, Hawaii, 1986-2002, Journal of Toxicology and Environmental Health, Part A, 70: 7-18, 2007

  • birth defects
  • the worsening of pain
  • lung damage
  • causes cancer
  • aids - marijuana opens the door to Kaposi's Sacrcoma
  • brain injury and impairment
  • strokes
  • immune system damage
  • mental illness
  • violence
  • infertility
  • addiction

Marijuana does not hurt the immune system



"Too Much Cannabis Worsens Pain" - BBC News, 24 October 2007

"Study Finds that Marijuana Won't Stop Multiple Sclerosis Pain"- Neurology, 2002; 58:1404-1407
"Deputy Director Madras Sheds Light on Controversial Medical Marijuana Study"- Pushing Back,


Marijuana Smoke Contains Higher Levels of Certain Toxins Than Tobacco Smoke, Science Daily, December 18, 2007
Marijuana Smokers Face Rapid Lung Destruction - As Much as 20 Years Ahead of Tobacco Smokers, Science Daily, January 27, 2008
"One Cannabis Joint as Bad as Five Cigarettes" - Reuters UK, 31 July 2007
"Use of Marijuana Impairs Lung Function" - Addiction, 2002; 97:1055-1061 
"Study: Smoking Cannabis Causes Damage to Lungs" - Reuters UK
"Respiratory and Immunologic Consequences of Marijuana Smoking"- Journal of Clinical Pharmacology, 2002; 42:71S-81S 
"Respiratory Effects of Marijuana and Tobacco Use in a U.S. Sample" - J Gen Intern Med, 2004; 20:33-37


"Association Between Marijuana Use and Transitional Cell Carcinoma"- Adult Urology, 2006; 100-104


"Marijuana Component Opens The Door For Virus That Causes Kaposi's Sarcoma" -Science Daily, 2 August 2007


"Marijuana May Affect Blood Flow in Brain" - Reuters, 7 February 2005


"More Evidence Ties Marijuana to Stroke Risk" - Reuters Health, 22 February 2005
"Pot Use Tied to Stroke in Three Teenagers" - Reuters Health, 26 April 2004


"Immunological Changes Associated with Prolonged Marijuana Smoking" -American College of Allergy, Asthma and Immunology, 17 November 2004


"Cannabis-Related Schizophrenia Set to Rise, Say Researchers" - Science Daily, 26 March 2007
"Report: Using Pot May Heighten Risk of Becoming Psychotic" - Associated Press, 26 July 2007
"Anterior Cingulate Grey-Matter Deficits and Cannabis Use in First-Episode Schizophrenia"
- The British Journal of Psychiatry, 2007; 190: 230-236
"Marijuana Increases the Risk of Both Psychosis In Non-Psychotic People As Well As Poor Prognosis For Those With Risk of Vulnerability to Pyschoses" - American Journal of Epidemiology, 2002; 156:319-327 
"Psychophysiological Evidence of Altered Neural Synchronization in Cannabis Use:
Relationship to Schizotypy" - Am J Psychiatry, 2006; 163:1798-1805
"Marijuana Linked to Schizophrenia, Depression" - British Medical Journal, 21 November 2007
"Cannabis Shows Anti-Depression Benefits But Too Much Has Reverse Effect" -The Canadian Press, 24 October 2007


"Cannabis 'Linked to Aggression'" - News, Press Association 2006
"Marijuana Had a Greater Effect on Increasing the Degree of Violent Behavior in
Non-Delinquent Individuals Than in Delinquent Individuals" - J Addict. Dis. 2003; 22:63-78


"Cannabis Use and Educational Attainment" - VOX, 18 September 2007
"Differential Effects of Delta-9-THC On Learning in Adolescent and Adult Rats"- Pharmacology Biochemistry and Behavior, 2 May 2006 
The Occurrence of Cannabis Use Disorders and Other Cannabis Related Problems Among First Year College Students, Addictive Behaviors 33(3):397-411, March 2008.


"Marijuana Firmly Linked to Infertility" - Scientific American, 22 December 2000


The Occurrence of Cannabis Use Disorders and Other Cannabis Related Problems Among First Year College Students, Addictive Behaviors 33(3):397-411, March 2008.
"Regular or Heavy Use of Cannabis Was Associated with Increased Risk of Using
Other Illicit Drugs" - Addiction, 2006; 101:556-569 
"As Marijuana Use Rises, More People Are Seeking Treatment for Addiction" -Wall Street Journal, 2 May 2006 
"Adolescent Cannabis Exposure Alters Opiate Intake and Opioid Limbic Neuronal
Populations in Adult Rats" - Neuropyschopharmacology, 2006, 1-9

"Twenty-Five Year Longitudinal Study Affirms Link Between Marijuana Use and
Other Illicit Drug Use" - Congress of the United States,14 March 2006
"New Study Reveals Marijuana is Addictive and Users Who Quit Experience Withdrawal"
- All Headline News, 6 February 2007
"Cannabis Withdrawal Among Non-Treatment-Seeking Adult Cannabis Users" -The American Journal on Addiction, 2006; 15:8-14 
"Escalation of Drug Use in Early Onset Cannabis Users Vs. Co-twin Controls"
- Journal of the American Medical Association, 2003; 289:4