By Dr. Mercola
  Marijuana was a popular botanical medicine in the 19th and 20th centuries, common in U.S. pharmacies of the time. 
 Yet, in 1970, the herb was declared a Schedule 1 controlled substance  and labeled as a drug with a "high potential for abuse" and "no  accepted medical use."
 Three years later the Drug Enforcement Agency (DEA) was formed to  enforce the newly created drug schedules, and the fight against  marijuana use began.
 The Huffington Post  has a concise history of marijuana prohibition, and the struggle for  legalization, that is well worth reading -- but the most successful  movement to date, and the one that is set to produce the first legal  marijuana market in decades, is the medical marijuana movement.
 Unfortunately, the feds have recently announced a blatant reversal on  their previous pro-medical marijuana stance -- a move that is  threatening to stop the industry cold.
 
 
                                                                                     Story at-a-glance                         
                         -                              Fifteen  states plus the District of Columbia have laws permitting medical  marijuana, but the Drug Enforcement Agency (DEA) has raided medical  marijuana suppliers and even arrested patients, because on a federal  level, possessing or distributing marijuana is still considered a  criminal offense                         
 -                              In  2009, the U.S. Justice Department told federal prosecutors to lay off  Americans producing and using medical marijuana in accordance with state  laws, but this year in a blatant about-face, the Obama administration  declared that only seriously ill patients and caregivers would be spared  from arrest                         
 -                              Recently,  a series of attacks against the medical marijuana industry have  occurred, including threats against banks and landlords that do business  with those in the industry. Also, the IRS has denied medical cannabis  facilities in California the right to file standard expense deductions.  These strong-arm tactics put the medical marijuana industry in jeopardy,  and may force those who depend on it for medical purposes to resort to  the black market                         
 -                              Research  shows medical marijuana holds promise in the treatment of over 100  health conditions, including cancer, autoimmune diseases, pain,  glaucoma, asthma, psychiatric conditions and high blood pressure.                         
 -                              Fifty percent of Americans now support the legalization of marijuana                         
 
                                             Why are the Feds So Concerned About Medical Marijuana?
  Fifteen states plus the District of Columbia have laws allowing medical marijuana. 
 In other words, in those states it is considered legal to consume, possess or distribute marijuana for medical use.  
 Up until 2009, the U.S. Justice Department essentially told federal prosecutors to lay off Americans producing and using medical marijuana in accordance with state laws.
 But despite marijuana's legal status at the state level, historically  it was common for the DEA to raid medical marijuana suppliers and even  arrest patients. 
 This is because federal law overrides state law, defining the possession or distribution of marijuana as a criminal offense. 
 According to The State of the Medical Marijuana Markets 2011,  the national market for medical marijuana is now worth $1.7 billion --  and could grow to close to $9 billion in the next five years -- if not  for a stunning reversal by the Obama administration. In October 2011,  the Obama administration released a letter to clarify their earlier  position, which, as Seattle Weekly reports,  indicates, "The only people safe from arrest were the "seriously ill"  patients and their caregivers... Everyone else?  Be forewarned."
 The Obama administration has long been supportive of the medical marijuana movement, even stating during the presidential campaign that,  "The basic concept of using medical marijuana... [is] entirely  appropriate." However the Feds now appear to be launching a full-fledged  attack against this legitimate industry, not only by threatening  prosecution and arrest, but also by intimidating and coercing banks,  land and store owners, as well as other business entities, that help  keep the medical marijuana industry alive.
 
 Feds Attempt to Force Medical Marijuana Industry Out of Business
  In recent months there have been several blows to the various  industries who support the medical marijuana market. Paul Armentano,  deputy director of NORML, the National Organization for the Reform of  Marijuana Laws, reported in U.S. News & World Report Opinion, these disturbing changes:
 - "The Department of Justice sent letters this past spring to  state lawmakers that were debating legislation to allow for the licensed  distribution of medical cannabis, threatening prosecution of those  involved with said efforts if the measures went forward; 
 - The IRS has assessed crippling penalties on taxpaying  medical cannabis facilities in California by denying these operations  the right to file standard expense deductions; 
 - The Department of Treasury has strong-armed local banks and  other financial institutions into closing their accounts with medicinal  cannabis operators; 
 - The Drug Enforcement Administration has rejected a  nine-year-old administrative petition that called for hearings regarding  the federal rescheduling of cannabis for medical use, ignoring  extensive scientific evidence of its medical efficacy; 
 - The National Institute on Drug Abuse rejected an  FDA-approved protocol to allow for clinical research assessing the use  of cannabis to treat post-traumatic stress disorder, stating, "We  generally do not fund research focused on the potential beneficial  medical effects of marijuana." 
 - Most recently, Deputy Attorney General James Cole, along  with the four U.S. attorneys from California, announced plans for a  coordinated effort against operations in California that provide  above-ground access to cannabis for those patients qualified to use the  substance in accordance with state law." 
 
 The war on marijuana is indeed a strange one, considering the  legality of cigarettes and alcohol -- products that have vastly greater  potential to harm public health, without any of the medicinal benefits.  Not to mention that the FDA approves drugs, prescribed by doctors every  day, that kill over 100,000 Americans a year.
 Moreover, by shutting down reputable marijuana dispensaries, it will  only force those who legitimately depend upon it to alleviate their  suffering to enter the (sometimes dangerous) black market. 
 As Seattle Weekly wrote:
  "Landlords, worried the feds will steal their property, will tell  dispensaries to move out. Banks won't handle money for pot-themed  businesses. Dispensaries will be taxed so heavily they won't be able to  cover the payroll or pay the electric bill.
 … An estimated one million people in California have obtained a  doctor's recommendation to grow and use marijuana legally. Patient  estimates in Washington are hazier, but the number is thought to be  around 100,000.
 If the feds shut down every dispensary in the country, all these  people will still be able to legally possess marijuana—no matter where  they bought it—under their state laws. The only difference is they'll be  forced to go back to buying their weed from Mexican drug cartels,  rather than from Americans who provide jobs and pay taxes."
 
 What are the Medical Uses for Marijuana? 
  In order to really comprehend the movement behind medical marijuana,  you must first understand that this herb truly does show outstanding  promise as a medicinal plant. The studies conducted so far show  significant potential for the use of cannabis in the prevention and  treatment of a wide range of health conditions, including cancer. 
 For instance, in 2009 a study in the journal Cancer Prevention Research found that marijuana smokers have a lower risk of head and neck cancers than non-marijuana smokers.
 Harvard researchers also found that THC in marijuana cuts tumor growth  in lung cancer while significantly reducing its ability to spread.  There is also a wealth of research linking marijuana with pain relief  and improved sleep. In one recent study, just three puffs of marijuana a  day for five days helped those with chronic nerve pain to relieve pain and sleep better.
 Americans for Safe Access also has links to research studies suggesting that cannabis may help in the treatment or prevention of Alzheimer's disease and cancer, while the International Association for Cannabis as Medicine highlights the following medical uses:
 
                            | Nausea  |              Vomiting  |              Anorexia  |              Cachexia (Wasting Syndrome)  |          
                      | Spasticity  |              Movement Disorders  |              Pain  |              Glaucoma  |          
                      | Epilepsy  |              Asthma  |              Dependency and Withdrawal  |              Psychiatric Symptoms  |          
                      | Autoimmune Diseases  |              Inflammation  |              High Blood Pressure  |              Chronic Fatigue Syndrome  |          
      
 Lastly, the research site GreenMedInfo.com lists over 126  potential therapeutic applications for marijuana in disease prevention  and treatment, further illustrating just how voluminous the scientific  evidence really is in support of the medical marijuana movement.  
 
 Your Body is Hard-Wired to Respond to Cannabinoids in the Marijuana Plant
  There are more than 60 chemical compounds known as cannabinoids in  the marijuana plant. Cannabinoids interact with your body by way of  naturally occurring cannabinoid receptors embedded in cell membranes  throughout your body. There are cannabinoid receptors in your brain,  lungs, liver, kidneys, immune system and more; both the therapeutic and  psychoactive properties of marijuana occur when a cannabinoid (such as  the THC produced by the cannabis plant) activates a cannabinoid  receptor.
 Your body also has naturally occurring endocannabinoids that  stimulate your cannabinoid receptors and produce a variety of important  physiologic processes, far beyond that of the traditional "highs"  associated with THC.
 What is amazing is that your body is actually hard-wired to respond  to cannabinoids through this unique cannabinoid receptor system;  research is still ongoing on just how extensive their impact is on our  health, but to date it's known that cannabinoid receptors play an important role in many body processes, including metabolic regulation, cravings, pain, anxiety, bone growth, and immune function.
 A report by Dr. Manuel Guzman in the journal of Nature Reviews suggests that these active components of cannabis and their derivatives are potential anti-cancer agents: 
  " … these compounds [cannabinoids] have been shown to inhibit the  growth of tumour cells in culture and animal models by modulating key  cell-signaling pathways. Cannabinoids are usually well tolerated, and do  not produce the generalized toxic effects of conventional  chemotherapies."
 
 A report by the American College of Physicians (ACP) further notes that:
  "Marijuana has been smoked for its medicinal properties for  centuries. It was in the U.S. Pharmacopoeia until 1942 when it was  removed because federal legislation made the drug illegal … Still, the  overwhelming number of anecdotal reports on the therapeutic properties  of marijuana sparks interest from scientists, health care providers, and  patients.
 Over the past 20 years, researchers have discovered cannabinoid  receptors: CB1, which mediates the central nervous system (CNS), and  CB2, which occurs outside the CNS and is believed to have  anti-inflammatory and immunosuppressive activity. 
 These scientific developments have revealed much information  supporting expansion of research into the potential therapeutic  properties of marijuana and its cannabinoids."
 
 Why Isn't Marijuana Being Studied?
  This is the burning question, as even a quick review of the data suggests that cannabis deserves more than a passing glance  as a potential treatment for various diseases. But in the United States  – primarily for political reasons -- these studies are not being  performed.
 According to a report by Americans for Safe Access:
  "In the past three decades, there has been an explosion of  international studies designed to investigate the therapeutic value of  cannabis (marijuana).
 However, drastic restrictions on research in the U.S. have meant  that few clinical trials are being conducted domestically and none are  being conducted as part of a sponsor-funded drug development plan aimed  at obtaining Food & Drug Administration (FDA) approval for the  prescription use of the botanical plant itself.
 Meanwhile, research teams in Great Britain, Spain, Italy, Israel,  and elsewhere have confirmed - through case studies, basic research,  pre-clinical, and preliminary clinical investigations - the medical  value of cannabis … " 
 
 Of course, in the United States marijuana is so heavily controlled  that even if you wanted to conduct a clinical trial, you would have a  hard time getting a supply for research purposes. As the Safe Access report states:
  " … the federal monopoly on the supply of cannabis has  fundamentally limited FDA-approved clinical research to investigate its  safety and efficacy in controlling symptoms of serious and chronic  illnesses.
 In the United States, research is stalled, and in some cases  blocked, by a complicated federal approval process, restricted access to  research-grade cannabis, and the refusal of the Drug Enforcement  Administration (DEA) to license private production of cannabis for use  exclusively in federally approved research." 
 
 The DEA appears to be behind many puzzling restrictions concerning  the marijuana plant, including the fact that it is even illegal to grow  hemp in the United States. 
 Contrary to popular opinion, hemp and marijuana are not the same.  Both are members of the Cannabis sativa plant species, but they are two  distinct varieties, with hemp generally being too low in THC (the  compound responsible for the plant's notorious psychoactive effect) to  create a "high." In fact, the THC is intentionally bred out of the plant  in order to maximize its fiber, seeds and oil -- the constituents for  which it is most commonly used.
 Ironically, despite these differences, the DEA classifies all  Cannabis sativa varieties as "marijuana." This is why the United States  is the only industrialized nation in the world where growing industrial  hemp is next to impossible. To do so requires a permit from the DEA --  and it is reportedly almost impossible to get one.
 Could it be that the DEA has its own agenda for keeping marijuana a controlled substance?
 Seattle Weekly speculates:
  "Ignorance, false propaganda, and rank political posturing tend  to be the foundation of the anti-marijuana argument. (Throw in  bureaucratic turf protection as well. The DEA, for example, would need  fewer agents if pot was decriminalized nationwide.)"
 
 Many Americans Have an Open Mind About Legalizing Marijuana
  A new Gallup poll  found that a record high number of Americans -- 50 percent -- favor  legalizing marijuana use, which suggests that public pressure will  continue to build for a (pun-intended) grassroots legislative overhaul  of U.S marijuana laws...
 Of course, there are certainly some downsides to marijuana use that  need to be addressed, particularly if you are thinking of smoking it for  recreational purposes.
 Marijuana use can be addictive, and no doubt resources have been  squandered, families have been broken up and jobs lost over its use. In  the short-term, marijuana use can cause trouble with your ability to  think clearly and may impair memory. Marijuana also leads to motor skill  impairment and may adversely affect alertness, coordination and  reaction time, which is why it should never be used prior to driving.
 There is also some evidence that marijuana use can exacerbate psychotic symptoms  in those with schizophrenia or other psychotic disorders, as well as  serve as a "gateway" drug that eventually leads to the use of "harder"  drugs like cocaine and heroine, although this is still a matter of debate.
 Marijuana use among children and teens can also have dire  consequences, as drug use of any kind may encourage risky choices and  irresponsible behaviors.
 Furthermore, while the vast majority of marijuana use is through the  act of smoking it, it is worth noting that anytime you heat materials  and inhale them you run the risk of introducing toxic elements into your  system. Because of this it is always best to use an organic version;  any pesticides that are on the material that is burned and inhaled will  dramatically increase its toxicity.
 It is possible to avoid these risks entirely by either using cannabis  in hemp oil form or, as many medical marijuana patients advocate, by  using a vaporizer. The device allows for the ingestion of marijuana  without any combustion byproducts, eliminating rightful concerns about  the cumulative harms associated with smoking it.  It is also possible to  minimize harm by eating marijuana  (along with some fat, as THC is  fat-soluble and will not dissolve in water). 
 It is important to note that in the United States today using  marijuana for any reason is still considered an illegal activity that  can result in serious legal consequences, including imprisonment.  
 Sadly, it is not the scientific evidence -- but rather politics and  an increasingly insatiable privatized industrial-prison complex in need  of more drug-convicted "criminals"  -- which maintains the stranglehold  on our freedom to choose wild growing plants as our medicine rather than  soley FDA-approved drugs. 
 I think Willie Nelson said it well in the following quote: 
  I think people need to be educated to the fact that marijuana is  not a drug. Marijuana is an herb and a flower. God put it here. If He  put it here and He wants it to grow, what gives the government the right  to say that God is wrong?