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For the physiology and science of the plant, see Cannabis. For cultivation and non-drug uses see hemp.

The cannabis plant can be dried or otherwise processed to yield products containing large concentrations of compounds that have psychoactive and medicinal effects when consumed, usually by smoking or eating. Cannabis has been used for medical and psychoactive effects for thousands of years. Throughout the 20th century there was a massive upswing in the use of cannabis as a psychoactive substance, mostly for recreational purposes but to some extent for religious purposes. The possession, use, or sale of psychoactive cannabis products became illegal in many parts of the world during the early 20th century, and remains that way today.

History

Cannabis has been known as a medicinal and psychoactive compound from very early in history, and has been used continuously throughout the world, typically without stigma until the mid-20th century, when, mainly under the leadership of the United States, prohibition became increasingly global.

Ancient history

Cannabis was well known to the Scythians, as well as to the Thracians/Dacians, whose shamans (the kapnobatai - "those who walk on smoke/clouds") used to burn cannabis flowers in order to induce trances. The cult of Dionysus, which is believed to have been originated in Thrace, has also been linked to the effects of cannabis smoke. The most famous users of cannabis though were the ancient Hindus. It was called 'ganjika' in Sanskrit ('ganja' in modern Indian languages). According to legend, Shiva, the destructive aspect of the Hindu trinity, told his disciples to use the hemp plant in all ways possible. Cannabis is also thought by some to be the ancient drug soma, mentioned in the Vedas as a sacred intoxicating hallucinogen, although a number of advocates for different psychoactive substances such as Amanita muscaria make this claim as well.

Recent history

Under the name cannabis 19th century medical practitioners helped to introduce the herb's drug potential (usually as a tincture) to modern English-speaking consciousness. It was famously used to treat Queen Victoria's menstrual pains, and was available from shops in the US. By the end of the 19th century its medicinal use began to fall as other drugs such as aspirin took over.

The name marijuana (Mexican Spanish marihuana, mariguana) is associated almost exclusively with the herb’s drug potential. The term marijuana is now well known in English as a name for drug material due largely to the efforts of US drug prohibitionists during the 1920s and 1930s, who deliberately used a Mexican name for cannabis in order to turn the populace against the idea that it should be legal.

Although cannabis has been used for its psychoactive effects since ancient times, it first became well known in the United States during the jazz music scene of the late 1920s and 1930s. Louis Armstrong became one of its most prominent and life-long devotees. Cannabis use was also a prominent part of 1960s counterculture.

Today in America, there are 11 states that provide some legal protection for patients who use marijuana with the consent or recommendation of a doctor. Most recently, Rhode Island became the 11th state to pass medical marijuana legislation. Tolerance for the drug appears to be growing in non-medical respects as well. For example, currently in the state of Oregon possession of less than one ounce of marijuana for personal use by an adult is considered a violation, not a crime, and is punishable by a simple fine. Various individual cities through the United States (such as Ann Arbor, Michigan) have similar legislation. None of these protections, however, will protect a user from federal prosecution.

On November 1, 2005, the city of Denver, Colorado passed in a 53%-46% vote to legalize the possession of up to an ounce of marijuana for adults over 21 .

On December 2, 2005, a broad coalition of political parties in Amsterdam, Netherlands, unveiled a pilot program to allow farmers to legally grow marijuana. As it stands currently, designated coffee shops can sell cannabis, but must be supplied by underground grow operations.

New breeding and cultivation techniques

Advances in breeding and cultivation techniques have increased the diversity and potency of cannabis strains over the last 20 years, and these strains are now widely smoked all over the world. These advances- the sinsemilla technique, breeding, seed banks, hydroponics, cloning, lighting techniques, sea of green, etc— have been in part a response to prohibition enforcement efforts which have made outdoor cultivation more risky, and so efficient indoor cultivation more common.

The increases in potency - and ramifications thereof - have been exaggerated by prohibitionist factions both in and out of government. In the United States, government advertisements encourage parents to disregard their own experience with cannabis when speaking to their children, on the premise that pot today is significantly stronger - and thus more dangerous - than that which they themselves might have smoked in the past. In a general pattern of proposing reverses in cannabis rescheduling, the UK government is considering scheduling stronger cannabis (skunk, in local parlance) as a separate, more restricted substance.

Immediate effects of human consumption

The nature and intensity of the immediate effects of cannabis consumption vary according to the dose, the species or hybridization of the source plant, the method of consumption, the user's mental and physical characteristics (such as possible tolerance), and the environment of consumption. Effects of cannabis consumption may be loosely classified as cognitive and physical. Anecdotal evidence suggests that the Cannabis sativa species tends to produce more of the cognitive or perceptual effects, while Cannabis indica tends to produce more of the physical effects.

Cognitive, behavioral, or perceptual

Cannabis has a broad spectrum of possible cognitive, behavioral, or perceptual effects, the occurrence of which vary from user to user. Some of these are the intended effect desired by users, some may be considered desirable depending on the situation, and others are generally considered undesirable. Users of cannabis report that these kinds of effects are more often produced by the sativa species of cannabis.

Physical or sensory

Cannabis also has effects that are predominantly physical or sensory. It is widely believed that the indica species of Cannabis is more likely to produce effects like these.

Wild Cannabis

Cannabis still grows wild in many places around the world. The most prominent variety being Cannabis Sativa which found growing wild in places such as Kyrgyzstan, Afghanistan, Pakistan, parts of China, Hungary, Poland, India, and Nepal. Wild Cannabis Indica is mainly confined to hash producing areas such as Afghanistan, and Northern Pakistan. The wild C. Sativa has alot of genetic variation from place to place. For example the wild C. Sativa in warm places can reach heights upto 20 ft. tall, but in colders climates it can be as short as a 1 ft. tall. Almost every single flower bract bears a seed. The wild C. Sativa has long, thin and airy buds and mostly, a christmas tree shape structure. Wild C. Indica for the most part remains compact and bushy with thick buds, and is sometimes used by the locals for hashish production. There are far fewer seeds in C. Indica

List of effects

• Anti-emetic properties
• Modulation of working and short-term memory
• Impairment of short-term memory
• Enhancement of many other drugs (including alcohol, ecstasy, tobacco, heroin, cocaine, LSD, psilocybin and many others)
• Auditory or visual hallucinations at high doses in some users
• Exaggerated ambidexterity
• Paramnesia, repetitiveness and ambiguation
• Increased appetite (sometimes referred to as "the munchies"), an effect of stimulation of the endocannabinoid system, which affects body weight, insulin resistance, and dyslipidemia.
• Increased sexual pleasure
• Increased awareness of sensation
• Increased awareness of patterns and colors
• Increased mental activity, like metacognition
• Induced sense of novelty
• Initial wakefulness followed by drowsiness and lassitude ('burnt out')
• Introspective or meditative states of mind
• Gain of inhibitions
• Mild euphoria, feelings of general well-being
• Relaxation or stress reduction
• Tachycardia (Increased heart rate)
• Dry mouth (sometimes referred to as cottonmouth, pasties, or the drys (NZ))
• Keratoconjunctivitis sicca (sometimes referred to as blood-shot eyes, dry eyes or red eye(UK))

List of therapeutic effects

• Pain relief (especially headaches, cramps, and eye pain due to lowered intraocular pressure).
• Increased appetite, food subjectively tastes better.
• Reduced nausea, (especially from chemotherapy), though may cause or exacerbate nausea for some.
• Dilation of alveoli (air sacs) in lungs, resulting in deeper respiration.
• Increase in productive coughs
• Dilation of blood vessels (vasodilation), resulting in:
  • Increased blood flow and heart rate
  • Reddening of the conjunctivae (red eye)
• Lower intra-ocular pressure (beneficial to glaucoma patients).
• Lower blood pressure while standing. Higher blood pressure while sitting (note that this can lead to instances of orthostatic hypotension).
• Induces drowsiness (beneficial to sufferers of insomnia and sleep deprivation).
• Relaxation
• Reduced stress
• Mild entheogenesis (e.g. per Rastafarian users, more "Jah-Vibrations")

Active ingredients, metabolism, and method of activity

Of the approximately 400 different chemicals found in Cannabis, the main active ingredient is tetrahydrocannabinol (delta-9-tetrahydrocannabinol, THC). THC can degrade to CBL & CBN (other cannabinoids), which can make one feel sleepy and disoriented. Different marijuana products have different ratios of these and other cannabinoids. Depending on the ratio, the quality of the "high" will vary.

THC has an effect on the modulation of the immune system which may have an effect on malignant cells, but there is insufficient scientific study to determine whether this might promote or limit cancer. Cannabinoid receptors are also present in the human reproductive system, but there is insufficient scientific study to conclusively determine the effects of cannabis on reproduction. Mild allergies to cannabis may be possible in some members of the population.

A study has shown that holding cannabis smoke in one's lungs for longer periods did not conclusively increase THC's effects.

Lethal dose

It is generally considered to be impossible to achieve a lethal overdose by smoking cannabis. According to the Merck Index, 12th edition, the LD₅₀, the lethal dose for 50% of tested rats, is 42 milligrams per kilogram of body weight. That is equivalent of a 75 kg (≈165 lb) man ingesting all of the THC in 21 one-gram cigarettes of maximum-potency (15% THC) cannabis buds, assuming no THC was lost through burning or exhalation. For oral consumption, the LD₅₀ for rats is 1270 mg/kg and 730 mg/kg for males and females, respectively, equivalent to the THC in about a pound of 15% THC cannabis. Only with intravenous administration — an unheard of method of use — may such a level be even theoretically possible.

There has only ever been one recorded verdict of fatal overdose due to cannabis, however this finding was found on multiple professional reviews to be "not legitimate".

In January 2004, Lee Maisey of the United Kingdom was found dead. The coroner's report stated "Death due to probable cannabis toxicity". It had been reported that Maisey smoked about six joints a day. Mr. Maisey's blood contained 130 nanograms per milliliter (ng/ml) of the THC metabolite THC-COOH.

The validity of the finding did not stand up well under review. As reported on 2004-01-28 in the Neue Züricher Zeitung, the Federal Health Ministry of Switzerland asked Dr. Rudolf Brenneisen, a professor at the department for clinical research at the University of Bern, to review the data of this case. Dr. Brenneisen said that the data of the toxicological analysis and collected by autopsy were "scanty and not conclusive" and that the conclusion "death by cannabis intoxication" was "not legitimate". Additionally, Dr. Franjo Grotenhermen of the nova-Institute in Cologne, Germany said: "A concentration of 130 ng/ml THC-COOH in blood is a moderate concentration, which may be observed some hours after the use of one or two joints. Heavy regular use of cannabis easily results in THC-COOH concentrations of above 500 ng/ml. Many people use much more cannabis than Mr. Maisey did, without any negative consequences."

Long-term effects of human consumption

Main article: Health issues and the effects of cannabis

There is little conclusive scientific evidence about the long-term effects of human cannabis consumption. The findings of earlier studies purporting to demonstrate the effects of the drug are unreliable and generally regarded as junk science, as the studies were flawed, with strong bias and poor methodology. The most significant confounding factor is the use of other drugs, including alcohol and tobacco, by test subjects in conjunction with cannabis. When subjects using only cannabis were combined in the same sample with subjects using other drugs as well, researchers could not reach a conclusion as to whether their findings were caused by cannabis, other drugs or the interaction between them.

Tolerance, withdrawal and dreams

Although use may become habitual, the extent of physical dependence to cannabis is unknown (DEA, 2004). Many animal and human studies conducted since the 1970s have revealed cannabis withdrawal symptoms in some people after abstinence from heavy use which is usually characterized by a period of anxiousness, sleeplessness, more vivid and memorable dreams, (REM rebound), irritability, and diminished appetite after cessation of use. Because cannabis is a psychedelic drug, unlike typical depressant or stimulant drugs, these persistent effects are typically not as severe as those normally associated with physical dependence.

THC molecules break down quickly after ingestion, although some components can be detected for a period of up to a month after use, and up to 6 weeks or more in heavy users. Although these components are not proven to have any ongoing physical or mental effects in themselves— THC undergoes exponential decay, working its way out of the body slowly over many days, thus reducing the potential to cause withdrawal symptoms.

Long-term effects on the mind and brain

There is a growing body of medical evidence which may show correlations between cannabis use and psychosis, schizophrenia, or clinical depression. Some believe that cannabis may trigger latent conditions or be part of a complex coordination of causes, referred to as the diathesis-stress model in psychology. On the other hand, many people with pronounced psychological disorders, especially schizophrenia and depression, often self-medicate their illness with cannabis in place of potent main-stream drugs like antipsychotics, due to cannabis's relatively low side effects and calming physiological effects that alleviate symptoms.

One concern with research alleging a link between cannabis use and psychotic illness has been that, while a correlation may be drawn, it is not possible to establish causality. Recent research has attempted to address this concern by studying large groups free of mental illness, to examine the proportion of individuals that already use cannabis who go on to develop mental illnesses.

Further evidence for causality was provided by a 2005 study showing the existence of a genetic predisposition to cannabis related symptoms of psychosis, by showing correlation between presence of the COMT gene, adolescent cannabis use and symptoms of psychotic illness. The study demonstrates that early adolescent cannabis use is a greater predictor for symptoms of adult psychosis among carriers of the gene. The study attempted to control for prior mental illness and other alternative explanations, thereby establishing causality. However, the small sample size, symptom screening prior to likely age of symptom onset, and the cohort nature of the study, all call the result into question. This theory is still hotly disputed , and further research is ongoing.

Some claim that extended use of cannabis may help the user reach a higher level of mental consciousness and clarity, expanding the mind and helping individuals become more aware, insightful and intelligent. These claims seem contradictory to the common view of the long-term effects of marijuana use, but this contradiction may simply be indicative of differing interpretations of a common effect.

Long-term physical effects of smoking

The combustion of any organic material creates irritants and carcinogens, and cannabis is no different. The long-term effects of smoking any substance depends on frequency of use, duration of inhalation, and composition of the smoke. This leads many to assume that the effects of cannabis can be directly compared to other well-known smoking materials such as tobacco. However, direct, volume-for-volume comparisons of the two are probably invalid because the chemical composition and methods of usage are not the same. Studies on the subject are inconclusive and have not isolated all the possible factors exacerbating or ameliorating the effects of cannabis user. Here are some of these factors:

Possibly exacerbating factors:

• Studies have pointed out that cannabis produces more tar and burns at a higher temperature than tobacco.
• Many cannabis smokers inhale the smoke more deeply and hold it in their lungs for a longer period of time.

Possibly mitigating factors

• Generally, even a chronic cannabis user does not inhale a daily volume of smoke equal to a significant portion of that of a tobacco smoker.
• Cannabis smoke does not tend to penetrate to the smaller, peripheral passageways of the lungs, concentrating rather on the larger, central passageways.
• Industrialized cultivation and preparation of tobacco introduces a variety of toxic and carcinogenic additives and congeners such as nitrosamines, arsenic, radium-226, and polonium-210. This problem does not pertain to cannabis, the vast majority of which is grown in wild, organic, or hydroponic conditions.
• There is evidence to suggest that cannabinoids present in cannabis may actually serve to protect against cancer.

Some studies have claimed a positive correlation between cannabis use and lung cancer, however, it is possible that this may be due to correlation between cannabis and tobacco use. More study would be needed to separate tobacco use and other factors in order to better understand the potential long-term physiological effects of cannabis use itself. Some recent reports suggest that when the data is properly analyzed, the correlation may in fact be negative.

Medicinal use

Medically, cannabis is most often used as an appetite stimulant and pain reliever for certain terminal illnesses such as cancer and AIDS. It is also used to relieve glaucoma and certain neurological illnesses such as epilepsy, migraine and bipolar disorder. The medical use of cannabis is politically controversial, but it is sometimes recommended informally by physicians. A synthetic version of the major active chemical in cannabis, THC, is readily available in the form of a pill as the prescription drug Marinol. THC has also been found to reduce arterial blockages. A sublingual spray derived from an extract of cannabis has also been approved for treatment of multiple sclerosis in Canada as the prescription drug Sativex - this drug may now be legally imported into the UK on prescription. Eleven states in the US allow marijuana consumption for medical purposes; however, Gonzales v. Raich ruled marijuana illegal for any purpose.

See section History for information on historic and other medical use.

Spiritual use

Cannabis has a long history of spiritual use, especially in India, where it has been used by wandering spiritual sadhus for centuries. The most famous religious group to use cannabis in a spiritual context is the Rastafari movement, though it is by no means the only group Ex. Church of the Universe. Some historians and etymologists have claimed that cannabis was used by ancient Jews, early Christians and Muslims of the Sufi order.

Many individuals also consider their use of cannabis to be spiritual regardless of organized religion, though it is banned in many parts of the world.

Preparations for human consumption

Cannabis is prepared for human consumption in several forms:

• Marijuana or buds, the resin gland-rich flowering tops of female plants.
  • Sinsemilla or sensemillia, flowering tops which are free of seeds as a result of being grown in a pollen-free environment. Since no plant energy can go into seed formation, this version is higher in psychoactive components.
• kief or kif, a powder containing the resin glands (glandular trichomes, often incorrectly called "crystals" or "pollen"). It is produced by sifting marijuana and leaves.
• Hashish, a concentrated resin made from pressing kif into blocks.
• Charas, produced by hand-rubbing the resin from the resin gland-rich parts of the plant. Often thin dark rectangular pieces.
• Bhang, prepared by the wet grinding of the leaves of the plant and used as a drink.
• Hash oil, resulting from extraction or distillation of THC-rich parts of the plant.
• Minimally potent leaves and detritus, called shake, bush or leaf.

There are also three sub-species of Cannabis. These include Cannabis sativa, Cannabis indica, and Cannabis ruderalis, the latter containing much less THC and generally not used as a psychoactive. They differ in their appearance and the highs they produce. There have also been claims to a fourth sub-species of cannabis, which has been nicknamed "Cannabis Rasta". It is not yet a formally accepted sub-species and similar to "Cannabis Sativa" with regards to psychoactivity.

Smoking

The most common method of cannabis consumption is by smoking a hit through one of several classes of devices:

1. By rolling it up, either manually or with a rolling machine, into a cigarette, often called a spliff or joint, with thin rolling papers, or into a cigar, often called a blunt, with wrapper either obtained by removing the tobacco from the inside of a standard cigar or purchased as a "blunt wrap". In such preparation, tobacco or other smokable material are sometimes combined (mulled) into a single roll. Users may also purchase flavored papers or blunt wraps which both mask the scent of the cannabis and provide for a tastier smoke.
2. By using a smoking pipe, often called a bowl, usually made of blown glass, wood, or sometimes metal (nonreactive, such as brass, to avoid inhalation of undesirable metal vapours). Blown-glass pipes are usually intricately and colorfully designed, with colors becoming more vivid after repeated use. Such pipes usually have a rush, choke, or carb, short for carburetor or shotgun hole which is covered by a finger for suction when beginning smoking, which is released to finish inhalation, thus clearing the pipe of smoke without advancing the burning any further. Tobacco pipes, pipes home-made by the user, and others, are also sometimes used. Some users prefer a vertically held ceramic or glass pipe, known as a chillum, coming from India.
3. In a water-pipe, or bong, by which the smoke is filtered through water into a large chamber. The design originated in Vietnam, bong likely being a corruption of the Thai word "baung", and was brought back to the states by American soldiers returning from the war. It should be noted that smoking from a bong loaded with cold water, ice, or snow will greatly cool the smoke and reduce adverse effects of the heat. Bong use is common and enables smoking techniques that are not possible with a simple smoking pipe. Other designs include the waterfall bong and bucket bong. The term gravity bong has different meaning in different cultures but usually refers to either of these two latter devices. The bucket bong (or bucky as it is commonly referred to in New Zealand) usually consists of the user placing the marijuana in a cone made from a socket set (13mm) atop a plastic bottle with either a few small holes (2cm diameter) in the bottom of the bottle, or a complete cut along the bottom of the bottle. The bottle is then lowered into a bucket of water so that only the cone is above the water level. From here, the user lights the cone and proceeds to pull the bottle upwards until the bottle is full with smoke from the marijuana. The cone is then removed by unscrewing the bottle cap, and the user then proceeds to place his/her mouth over the bottle, exhaling all air beforehand, then inhaling as they lower the bottle into the water. This method is especially efficient when marijuana supplies are scarce.
4. In a shottie (U.S. Bulldozer), which is generally a 500ml/50cl carbonated drinks bottle, although any bottle, even glass, can be used. A bong pipe is inserted into a small hole, usually burnt or somehow put near the bottom of the bottle, but leaving enough room to allow for approx. 75ml of water. No rush is required so there is only ONE hole on a shottie, other than the mouth piece.
5. By hot-knifing or doing blades, in which the tips of two knives are heated to a very high temperature, often by inserting them into the heating elements of a stove. The marijuana is then pressed between the heated knife-tips, rapidly combusting it. The smoke is often funneled into the mouth of the smoker through the use of a plastic bottle-top, empty pen, or other hollow tube or funnel. In New Zealand, this is also known as 'spots', and most famously undertaken at 'Da Phlat'. A modified method of "spotting", uses knife blades heated to a much lower temperature, hot enough to vaporise (see Vaporising below) the active ingredients, leaving the organic material scorched, rather than burned, thus removing potential harmful consequenses of the smoke itself.

Oral consumption

Cannabis may be orally consumed by blending it with alcohol or fats. With this method, some claim that more cannabis must be used. The effects of the drug take longer to begin, but last longer and may be more physical rather than mental. A strong dose of oral cannabis is considered to give a stronger experience than smoked cannabis. It is thought that the active component of cannabis, delta- 9 THC, is converted to the more psychoactive delta-11 THC in the liver. It takes some experience for one to regulate the dose. Common preparations involve blending with butter (to create cannabutter) that is used in preparing brownies, fudge, cookies or ganja goo balls. Infusion in drinks containing milk and flavoring herbs is also possible, and more common in India.

As with other drugs that are taken orally, it is sometimes customary to fast before taking the drug to increase the effect (possibly because an empty stomach will absorb the drug faster so it 'hits' more strongly -- although some do eat before consuming the drug because eating it on an empty stomach makes them feel sick). Still, it usually takes more than an hour for the effects to set in, as opposed to smoking, where it takes a few minutes.

Cannabis could also be consumed as a tea. THC is lipophilic and little water soluble (few grams/litre), but enough to make a tea effective.

The seeds of the plant, high in protein and fatty acids, are appreciated by many species of birds. Contrary to popular belief, marijuana seeds capable of growing are illegal under U.S. law. Federal law only makes an exception in the case of sterilized seeds, incapable of growing, and the mature stalks of the plant.

See Cooking with cannabis external links below.

Vaporization

Usually with a vaporizer, cannabis can be heated to a temperature of about 365°F, at which the active ingredients are released into gaseous form with little or no burning of the plant material. With this method, the user does not inhale as many toxic chemicals that are byproducts of combustion. Combustion also breaks down more of the cannabinoids present in cannabis, although the concentrations of the various cannabinoids may be different from those in smoked cannabis. Some users claim to experience subtly different effects when using cannabis in this way. In addition, users note an improved ability to distinguish subtle characteristics of flavor and aroma, in absence of lighter gas fumes or burnt matter.

Legality

Since the twentieth century, most countries have laws against the cultivation, use, possession, or transfer of cannabis (and, naturally, these laws impact adversely on the herb's cultivation for non-recreational purposes) but there are many regions where certain circumstances of cannabis handling are legal or licensed and others where laws against its use, possession, or sale are not enforced. Many jurisdictions have also decriminalized possession of small quantities of cannabis, so that it is punished by confiscation and/or a fine, rather than imprisonment. By effectively removing the user from the criminal justice system, decriminalization focuses more on those who traffic and sell the drug on the black market. However this does not solve the problem of how a user will obtain the 'legal amount' of marijuana, since buying or growing marijuana is still illegal. Increasingly, many jurisdictions also permit cannabis use for medicinal purposes. However, simple possession can carry long jail terms in some countries, particularly in East Asia, and the sale of cannabis can lead to life in prison or even the sentence of death by execution.

Prohibition and criminalization in the US

Until 1937, consumption and sale of cannabis was legal in most American states. In some areas it could be openly purchased in bulk from grocers or in cigarette form at newsstands, though an increasing number of states had begun to outlaw it. In that year, federal law made possession or transfer of cannabis (without the purchase of a by-then-incriminating tax stamp) illegal throughout the United States. This was contrary to the advice of the American Medical Association at the time. Legal opinions of the time held that the federal government could not outlaw it entirely. The tax was $100 per pound of hemp, even for clothes or rope. The expense, extremely high for that time, was such that people stopped openly buying and making it.

The decision of the U.S. Congress was based in part on testimony derived from articles in the newspapers owned by William Randolph Hearst, who was heavily interested in DuPont Inc. Some analysts theorize DuPont wanted to boost declining post-war textile sales, and wished to eliminate hemp fiber as competition. Many argue that this seems unlikely given DuPont's lack of concern with the legal status of cotton, wool, and linen; although it should be noted that hemp's textile potential had not yet been largely exploited, while textile factories already had made large investments in equipment to handle cotton, wool, and linen. Others argue that DuPont wanted to eliminate cannabis because its high natural cellulose content made it a viable alternative to the company's developing innovation: modern plastic. Still, others could argue that hemp could never truly compete with the high strength and elasticity of synthetics, such as nylon. Furthermore, hemp would have been an easy target due to its intoxicating effect, while no rational justification could have been made for outlawing cotton, wool, or linen.

During this period, Henry (Harry) Anslinger, then-Commissioner of the Federal Bureau of Narcotics, alleged that the drug could provoke criminal behavior in previously solid citizens. Anslinger, originally against a federal law, switched his position in response to pressure from Southern and Western states seeking to outlaw the substance in connection with immigrant populations. With the aid of Hearst and other media, the Bureau of Narcotics demonized the subject in pop culture. Anslinger was a prohibitionist and believed anti-marijuana laws would help encourage a revival of alcohol's prohibition. Anslinger also popularized the word marihuana for the plant, using a Mexican derived word (believed to be derived from an archaic Brazilian Portuguese term for inebriation, "Maria Joana") in order to associate the plant with increasing numbers of Mexican immigrants, creating a negative stereotype which persists to this day.

Anslinger was successful in outlawing machine-gun sales with a trick of law that made it impossible to complete a transaction without a stamp issued by the government. Even though the government had no intentions of issuing said stamps, the Supreme Court upheld the restriction on machine gun sales. (Today these stamps are routinely issued however to qualified buyers under the rules set forth in the National Firearms Act.) Congress then applied the same theory to majiuana. Following passage of The 1937 federal marijuana tax act, the mayor of New York City commissioned a study that determined all of Anslinger's claims to be false. Despite the testimony of the American Medical Associations director, Congress passed the bill to curb the percieved violent spread of the drug. In fact, the legal spread of amphetamines by prescription from doctors was at this time clearly a larger problem.

Anslinger's law was struck down by the Supreme Court in 1969. In a case brought by Timothy Leary, the Court held that the law's requirement that a would-be possessor of marijuana register with the local bureau of the IRS, thereby placing his name and address on a file available to local law enforcment, violated the Fifth Amendment privilege against self-incrimination, given the fact that at the time all 50 states had state laws on the books outlawing marijuana outright. In 1970, the Controlled Substances Act made possession of marijuana illegal again on a federal level, without the Fifth Amendment issues that scuttled the 1937 act, and without apparent concern for the issues which required the Eighteenth Amendment to effect the prohibition of alcohol. Several petitions for cannabis rescheduling in the United States have been filed, since the Act permits legalization of marijuana through the executive branch.

References

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2. "Dutch Politicians Seek Marijuana Rules". December 2. {{cite web}}: Check date values in: |date= and |year= / |date= mismatch (help)
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7. Henderson, Mark (2005-04-12). "One in four at risk of cannabis psychosis". {{cite news}}: Check date values in: |date= (help); Unknown parameter |org= ignored (help)
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10. Gardner, Fred (2005-07-02). "Study: Smoking Marijuana Does Not Cause Lung Cancer". {{cite news}}: Check date values in: |date= (help); Unknown parameter |org= ignored (help)
11. "Cannabis compound benefits blood vessels". 2005-04-04. {{cite news}}: Check date values in: |date= (help); Unknown parameter |org= ignored (help)
12. http://www.usdoj.gov/dea/agency/csa.htm. {{cite web}}: Missing or empty |title= (help); Unknown parameter |Date= ignored (|date= suggested) (help); Unknown parameter |Publisher= ignored (|publisher= suggested) (help); Unknown parameter |Title= ignored (|title= suggested) (help); Unknown parameter |Work= ignored (|work= suggested) (help); Unknown parameter |Year= ignored (|year= suggested) (help)

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• 420 (drug culture)
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External links

• Find the current street price of marijuana from undergroundeconomics.com
• Marijuana for the Masses News & Information
• Cannabisworld.org cannabis user and grower online community
• Overgrow.com cannabis user and grower online community
• Marijuana Safety Forum
• Cannabisnews.com excellent cannabis news clipping service
• Committee to Regulate and Control Marijuana - Nevada, website for 2006 initiative in Nevada to regulate and tax marijuana.
• Erowid.org Cannabis Information Bank
• Marijuana and Medicine: Assessing the Science Base
• Marihuana Information
• UN Drug Control and Prevention factsheet
• Hemp History and Industrial Uses
• Hemp History
• National Organization for the Reform of Marijuana Laws (NORML)
• NORML Canada
• NORML Saskatchewan
• Marijuana Party Of Canada
• Basic facts about marijuana from the American Council for Drug Education
• An extensive list of historical and contemporary users of cannabis Friends of cannabis, hemp heroes, pot stars, activists, pioneers celebrity stoners ect.
• ChristiansForCannabis.Com
• National Institute on Drug Abuse
• The Ivory Tree - What evolutionary purpose does the 'high' from cannabis serve?
• Marijuana Spurs Brain Cell Growth | related Wikinews story
• Four full pages of photos of cannabis cultivation in Morocco (Rif) on www.geopium.org
• A recent publication on hashish production and trafficking in the Rif area of Morocco

• Medicinal herbs and fungi
• Schedule I controlled substances
• Cannabis