The Anti Marijuana Resource

Update: 150+ Scientific Studies Showing the Dangers of Marijuana

* Please see the updated page for the most current scientific research.

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Marijuana - The Real Facts (1 hr)

Marijuana is a very dangerous drug that has been propagandized as "safe" by weak minded idiots. The reality is marijuana is an addictive drug that can cause brain damage, cancer, gum disease, heart disease, infertility, lung disease, obesity, pregnancy failure, viral infections and doubles the risk of car accidents. The United States has the highest level of marijuana use due to an increased ignorant acceptance of it as "safe" by popular culture through movies, music, television and video games.


Addiction:
Animals Exposed To Marijuana's Active Component Will Self-Administer The Drug (NIH National Institute on Drug Abuse)
Marijuana Withdrawal As Bad As Withdrawal From Cigarettes (Johns Hopkins University School of Medicine)
Marijuana Withdrawal Reported By Teens Seeking Treatment (University of Vermont)
Smoking, Drinking, Drugs: The Younger They Start, The Harder It Is To Quit (Center For The Advancement Of Health)

Gateway Drug:
Cannabis linked to use of amphetamines (Addiction Journal)
Brain Studies Tie Marijuana to Other Drugs (Science)
Early cannabis abuse 'leads to heroin addiction' (Mount Sinai School of Medicine)
Early marijuana use increases risk of drug and alcohol problems later in life (Washington University School of Medicine)
Illicit Drug Use Starts With Cannabis (University of Otago, New Zealand)
Marijuana use linked to hallucinogen use (Johns Hopkins University Bloomberg School of Public Health)
National Study Shows "Gateway" Drugs Lead to Cocaine Use (Center on Addiction and Substance Abuse)

Brain Damage:
Cannabis and adolescence: A dangerous cocktail (McGill University Health Centre)
Cannabis 'can cause psychosis in healthy people' (Institute of Psychiatry, King's College London)
Cannabis Could Increase Risks Of Psychotic Illness By 40 Percent (Cardiff University, UK)
Cannabis Increases Risk Of Psychosis (British Medical Journal)
Cannabis increases risk of depression and schizophrenia (British Medical Journal)
Cannabis ingredient causes toxic psychosis (University of Lausanne, Switzerland)
Cannabis link to psychosis (University of New South Wales, Australia)
Cannabis smokers 'are taking huge risk of psychotic illness' (Institute of Psychiatry, King's College London)
Cannabis Triggers Transient Schizophrenia-like Symptoms (Yale School of Medicine)
Cannabis use 'dulls the brain' (Journal of the American Medical Association)
Cannabis use precedes the onset of psychotic symptoms in young people (British Medical Journal)
Concerns over mental health risk of smoking cannabis (British Journal of Psychiatry)
Daily Consumption Of Cannabis Predisposes To Appearance Of Psychosis And Schizophrenia (University of Granada)
Daily Pot Smoking May Hasten Onset of Psychosis (Emory University)
Early Cannabis Use Increases Risk of Schizophrenia (University of Otago, New Zealand)
Early cannabis users three times more likely to have psychotic symptoms (University of Queensland, Australia)
Frequent Marijuana Use May Affect Brain Function (NeuroReport Journal)
Heavy Cannabis Use May Lead to Psychotic Symptoms (University of Otago, New Zealand)
Heavy Marijuana use has a detrimental impact on intelligence (Canadian Medical Association Journal)
Heavy Marijuana Use May Damage Developing Brain In Teens, Young Adults (Children's Hospital of Philadelphia)
How Marijuana Causes Memory Deficits (Nature Neuroscience)
How Smoking Marijuana Damages The Fetal Brain (Science)
Human Study Shows Greater Cognitive Deficits in Marijuana Users Who Start Young (Society for Neuroscience)
Lab study shows THC exposure as adolescents linked to negative effects of THC as adults (Federation of American Societies for Experimental Biology)
Long-term cannabis use causes brain injury (Archives of General Psychiatry Journal)
Marijuana And Alcohol Taken Together Induced Widespread Nerve Cell Death In Brains Of Young Rats (Annals of Neurology Journal)
Marijuana Damages Brain (King's College London)
Marijuana Is Linked to Brain Damage (The Lancet Medical Journal)
Marijuana Use Affects Blood Flow In Brain Even After Abstinence (Neurology Journal)
Marijuana use in pregnancy damages kids' learning (Proceedings of the National Academy of Sciences)
Marijuana Use Takes Toll On Adolescent Brain Function (University of Cincinnati)
Memory, speed of thinking get worse over time with marijuana use (American Academy of Neurology)
Molecular Imaging Shows Chronic Marijuana Smoking Affects Brain Chemistry (Society of Nuclear Medicine)
More Evidence Of Cannabis-induced Psychosis (BMC Psychiatry Journal)
New research reveals how cannabis alters brain function (Institute of Psychiatry, King's College London)
Scans reveal brain damage from cannabis is like schizophrenia (Albert Einstein College of Medicine)
Schizophrenia Linked To Dysfunction In Molecular Brain Pathway Activated By Marijuana (Archives of General Psychiatry Journal)
Skunk 'poses greatest risk of psychosis' (Institute of Psychiatry, King's College London)
Skunk smokers 18 times more likely to be psychotic (Royal College of Psychiatrists)
Starting marijuana use during teens may result in cognitive impairment later in life (NIH National Institute on Drug Abuse)
Teen Drug Use Associated With Psychiatric Disorders Later In Life (NIH National Institute On Drug Abuse)
Teen Marijuana Use Worsens Depression, Leads To More Serious Mental Illness (Office of National Drug Control Policy)

Cancer:
Cannabis alters human DNA (University of Leicester, UK)
How Cannabis Suppresses Immune Functions: Cannabis Compounds Found to Trigger Unique Immune Cells Which Promote Cancer Growth (European Journal of Immunology)
Marijuana ingredient promotes tumor growth, impairs anti-tumor defenses (NIH National Institute on Drug Abuse)
Marijuana Use Linked to Increased Risk of Testicular Cancer (Fred Hutchinson Cancer Research Center)
Marijuana Use Associated with HPV-Positive Head and Neck Cancer (Journal of the National Cancer Institute)
Smoking Marijuana May Increase Risk Of Head And Neck Cancers (Cancer Epidemiology Biomarker and Prevention Journal)
Tobacco is 'less risky than dope' (Memorial Sloan–Kettering Cancer Center)

Gum Disease:
Heavy Marijuana Use Linked To Gum Disease (Journal of the American Medical Association)

Heart Disease:
Adolescent binging on marijuana linked to stroke (Saint Louis University)
Marijuana use can trigger heart attack (Beth Israel Deaconess Medical Center)
Marijuana Use May Pose Health Threat To Baby Boomers (American Heart Association Circulation Journal)
Possible Connection Between Marijuana Abuse And Stroke Or Heart Attacks (Molecular Psychiatry Journal)
Regular Cannabis May Increase Risk Of Stroke In Young Users (British Medical Journal)

Lung Disease:
Growing Evidence Of Marijuana Smoke's Potential Dangers (American Chemical Society)
Impact on lungs of 1 cannabis joint equal to up to 5 cigarettes (British Medical Journal)
Long-term Marijuana Smoking Leads To Respiratory Complaints (Archives of Internal Medicine Journal)
Marijuana associated with same respiratory symptoms as tobacco (Yale School of Medicine)
Marijuana Smoke Contains Higher Levels Of Certain Toxins Than Tobacco Smoke (American Chemical Society)
Marijuana Smokers Face Rapid Lung Destruction -- As Much As 20 Years Ahead Of Tobacco Smokers (Respirology Journal)
Marijuana Smoking Increases Risk Of COPD For Tobacco Smokers (Canadian Medical Association Journal)
Marijuana Worsens COPD Symptoms In Current Cigarette Smokers (American Thoracic Society)
Research Confirms Adverse Effects of Cannabis on Respiratory Health (University of Otago, New Zealand)
Smoking One Joint is Equivalent to 20 Cigarettes (Medical Research Institute of New Zealand)

Obesity:
Machinery Of The 'Marijuana Munchies' (Neuron Journal)

Pregnancy Complication:
Marijuana Use Causes Early Pregnancy Failure (Journal of Clinical Investigation)
Marijuana use could cause tubal pregnancies (Vanderbilt University Medical Center)

Sexual Dysfunction:
Abusing Marijuana May Overload System, Inhibit Fertility (American Society for Cell Biology)
Marijuana-Like Compounds May Alter Human Fertility (American Society of Cell Biology)
Researcher connects cannabis use and sexual dysfunction (Queen's University, Canada)
Sperm From Marijuana Smokers Move Too Fast Too Early, Impairing Fertility (American Society of Reproductive Medicine)

Viral Infection:
Marijuana Component Opens The Door For Virus That Causes Kaposi's Sarcoma (Cancer Research Journal)
Regular Marijuana Use Increases Risk Of Hepatitis C-related Liver Damage (AGA Clinical Gastroenterology and Hepatology Journal)

Myth - Alzheimer Treatment:
Marijuana ineffective as an Alzheimer’s treatment (University of British Columbia)

Myth - Multiple Sclerosis Treatment:
Marijuana Use May Hurt Intellectual Skills in MS Patients (American Academy of Neurology)
Smoking Marijuana Impairs Cognitive Function in MS Patients (American Academy of Neurology)

Myth - Nausea Relief:
Severe Vomiting Sickness With Chronic Cannabis Abuse (World Journal of Gastroenterology)

Myth - Pain Relief:
Active ingredients in marijuana found to spread and prolong pain (University of Texas Medical Branch at Galveston)
Cannabis 'no better than codeine' for headaches (The Independent, UK)
Doubts on cannabis for pain relief (Flinders Medical Centre, Australia)
Drug trial casts doubt over cannabis-based painkiller for MS sufferers (Daily Mail, UK)
Endocannabinoids can promote pain (Institute of Pharmaceutical Sciences at ETH Zurich)
Oral Cannabis Ineffective In Treating Acute Pain (Journal of Anesthesiology)
Side effects rule out cannabis for pain and nausea (New Scientist)
Too Much Marijuana Makes Pain Worse, Not Better (University of California, San Diego)

Sociological:
African-American Girls Who Use Marijuana Engage In Riskier Sex, Have Higher STD Rate (School of Public Health, Emory University)
Cannabis Almost Doubles Risk Of Fatal Crashes (British Medical Journal)
Children who smoke cannabis are twice as likely to offend (Queen's University Belfast)
Driving under influence of cannabis more common and riskier than drink driving (University of Otago, New Zealand)
Early Exposure To Drugs, Alcohol Creates Lifetime Of Health Risk (Psychological Science Journal)
Emotional Intelligence And The Use Of Tobacco And Cannabis (UAB Department of General, Development and Educational Psychology)
Father's incarceration associated with elevated risks of marijuana and other illegal drug use (Bowling Green State University)
Frequent Family Meals Might Reduce Teen Substance Use (Journal of Adolescent Health)
Glamorization Of Drugs In Rap Music Jumped Dramatically Over 2 Decades (Addiction Research & Theory Journal)
Malt Liquor Linked To Marijuana Use Among Young Adults (Psychology of Addictive Behaviors Journal)
One Of Every Three Popular Songs Contains References To Substance Use (American Public Health Association)
Pot and pop: New research finds stronger link between music and marijuana use among teens (University of Pittsburgh Schools of the Health Sciences)
Pop Stars More Than Twice As Likely To Die An Early Death (British Medical Journal)
References To Explicit Substance Use Common In Popular Music (Archives of Pediatrics & Adolescent Medicine Journal)
Religiosity Curbs Teen Marijuana Use By Half (Journal of Drug Issues)
Researchers Find Factors That Encourage Cannabis Use Among University Students (Journal of Applied Biobehavioral Research)
Rising Teen Marijuana Use Is Fueled By Change In Attitudes (American Journal of Public Health)
Teens who frequently go out with friends more likely to use marijuana (Archives of Pediatrics & Adolescent Medicine)
United States Has Highest Level Of Illegal Cocaine And Cannabis Use (PLoS Medicine Journal)

Deadly:
Cannabis 'could kill 30,000 a year' (BBC, May 2, 2003)
Death by cannabis verdict is a first (The Times, UK, January 20, 2004)
Cannabis link in death crash (The New Zealand Herald, May 3, 2004)
Rail death teen 'took cannabis' (BBC, August 19, 2004)
Cannabis claim in Jodi death case (BBC, November 19, 2004)
Cannabis caused a 14-year-old to kill (Daily Mail, UK, February 14, 2005)
Death driver had smoked cannabis (The Whitehaven News, UK, May 19, 2005)
Patient died after cannabis trial (The Times, UK, December 12, 2005)
Cannabis medicine is implicated in death of pensioner (The Times, UK, December 17, 2005)
Soldier killed friend's dad while having 'cannabis-induced delusions' (Daily Mail, UK, August 29, 2006)
Cannabis downgrading blamed for psychotic killer gangs by vicar (Daily Mail, UK, October 4, 2006)
Death-crash teenagers had taken cannabis (The Argus, UK, January 31, 2007)
Boy on skunk cannabis butchered a grandmother (Daily Mail, UK, April 3, 2007)
Student's cannabis rampage emulates ultra-violent computer game (Daily Mail, UK, May 15, 2007)
Cannabis link to solicitor in death leap at Tate (The Daily Telegraph, UK, May 16, 2007)
Artist beaten to death by teens high on cannabis in savage attack (Daily Mail, UK, June 22, 2007)
How cannabis made me a monster (Daily Mail, UK, June 14, 2007)
Schizophrenic addicted to skunk cannabis killed best friend (Daily Mail, UK, August 2, 2007)
I warned them my cannabis-addicted son would kill (Daily Mail, UK, August 3, 2007)
Cannabis smoker blamed for seven-death crash (The Age, Australia, August 23, 2007)
Mother blames cannabis for suicide of promising violinist daughter (Daily Mail, UK, September 6, 2007)
Retired librarian bludgeoned to death by cannabis thug - for refusing to give him a cigarette (Daily Mail, UK, September 17, 2007)
Cannabis-smoking satanist admits knifing vicar to death in act of 'inhuman savagery' (Daily Mail, UK, October 17, 2007)
Deadly skunk 'accounts for 75 per cent of all cannabis seizures' (Daily Mail, UK, October 16, 2007)
Halifax man had smoked cannabis before death crash (Halifax Courier, UK, December 6, 2007)
Biker death cannabis row (The Star, UK, February 6, 2008)
Cannabis drove Brighton man to kill himself (The Argus, UK, February 22, 2008)
Cannabis-smoking mum stabbed herself to death (The Argus, UK, March 11, 2008)
How my perfect son became crazed after smoking cannabis (Daily Mail, UK, April 4, 2008)
Mother tells of horror of watching speedboat kill her two-year-old son on Paradise beach (Daily Mail, UK, April 16, 2008)
Shock video of couple forcing 18-month-old baby to smoke marijuana (Daily Mail, UK, April 18, 2008)
Teenager high on cannabis stabs girlfriend 32 times during bondage game after being wrongly told she had Aids (Daily Mail, UK, April 18, 2008)
Cannabis-smoking mother stabbed two young sons to death after begging social services to collect her children (Daily Mail, UK, April 28, 2008)
Addict stole tiny puppy then blew marijuana smoke in its face until it passed out (Daily Mail, UK, July 3, 2008)
Cannabis addict jailed for life after stabbing Good Samaritan to death as he tried to protect elderly neighbour (Daily Mail, UK, July 16, 2008)
Cannabis smoking led to brutal killing (The Daily Telegraph, UK, October 7, 2008)
Teacher's son 'stabbed his girlfriend to death after being driven mad by 10 years of cannabis abuse' (Daily Mail, UK, October 7, 2008)
Cannabis abuser 'snapped his 16-month-old daughter's back in two' (Daily Mail, UK, October 10, 2008)
Drunk motorist on cannabis killed holiday couple in 120mph crash (The Daily Telegraph, UK, October 23, 2008)
Student suicide over course worries after cannabis use (The Daily Telegraph, UK, October 30, 2008)
'Cannabis obsessed' thugs who left pickaxe attack victim for dead are jailed for four years (Daily Mail, UK, January 13, 2009)
Colorado Teen Allegedly Tries to Kill Mother After Marijuana Find (FOX News, March 16, 2009)
Cannabis addict gripped by paranoia stabbed a stranger to death in the street (Daily Mail, UK, March 20, 2009)
NHS blunders left cannabis-crazed schizophrenic free to stab policeman to death (Daily Mail, UK, March 24, 2009)
Depressed mum hanged herself while on cannabis (Eastbourne Today, UK, May 13, 2009)
Cannabis 'is not harmless' warns coroner after drug use triggers teenager's fatal fit (Daily Mail, UK, July 1, 2009)
Cannabis-smoking lorry driver who killed woman after ploughing into her on hard shoulder is jailed for just 14 months (Daily Mail, UK, September 9, 2009)
Man Chokes To Death On Marijuana After Arrest (WFOR-TV, December 12, 2009)
Death crash pilot 'had used cannabis' (Oldham Advertiser, March 2, 2010)
The Cannabis Countess: Why is eccentric who drilled a hole in head to get high supported by the Government's drugs czar? (Daily Mail, UK, April 10, 2010)
Baby hacked to death in axe-attack by laughing stranger, as mother begged for mercy (Daily Mail, UK, April 14, 2010)
Gymnast had cannabis in blood after death (ABC News, Australia, September 8, 2010)
Public schoolboy with cannabis habit who stabbed his best friend 13 times and left him for dead is locked up for nine years (Daily Mail, UK, September 28, 2010)
Schizophrenic man hooked on cannabis stabbed stranger 81 times... after NHS said he 'posed no danger' (Daily Mail, UK, October 5, 2010)

Note: This is not a resource on the legality of marijuana or a comparison to alcohol or tobacco.