Can cannabis help treat psoriasis? The active cannabinoids in cannabis may be an effective treatment for psoriasis. Research shows that they offer potential health benefits that could relieve the symptoms of psoriasis. They may be able to reduce inflammation and itching, control pain, and even heal wounds. Learn more about cannabis for psoriasis here. Read now

CBD, or Cannabidiol, is a compound known as a cannabinoid. Cannabinoids are compounds that act on certain neurotransmitters throughout your body’s Endocannabinoid System (ECS). The ECS is responsible for regulating pain, inflammation, recovery time, sleep, and much more. When CBD is applied, consumed, or vaped, it encourages your ECS to produce more cannabinoids to reduce distress. The CBD in our Pain Rub may be able to alleviate pain and inflammation when it is applied to the desired area.
Based on studies of sex reversal in hemp, it was first reported by K. Hirata in 1924 that an XY sex-determination system is present.[26] At the time, the XY system was the only known system of sex determination. The X:A system was first described in Drosophila spp in 1925.[29] Soon thereafter, Schaffner disputed Hirata's interpretation,[30] and published results from his own studies of sex reversal in hemp, concluding that an X:A system was in use and that furthermore sex was strongly influenced by environmental conditions.[27]
^ Hayakawa K, Mishima K, Hazekawa M, Sano K, Irie K, Orito K, Egawa T, Kitamura Y, Uchida N, Nishimura R, Egashira N, Iwasaki K, Fujiwara M (January 2008). "Cannabidiol potentiates pharmacological effects of Delta(9)-tetrahydrocannabinol via CB(1) receptor-dependent mechanism". Brain Research. 1188: 157–64. doi:10.1016/j.brainres.2007.09.090. PMID 18021759.
This is good news for the best CBD oil companies because the Farm Bill allows for the legal cultivation of industrial hemp, under certain circumstances, which can be a source of CBD. But CBD can also come from non-industrial hemp, namely the marijuana plant that most are more familiar with. Therefore, whether or not CBD oil for pain is legal can be a question of which “version” of the cannabis plant it was sourced from. If it was sourced from industrial hemp, (which contains less than 0.3% THC by volume), and it was cultivated under the Farm Bill, then it is legal.
This article reviews recent research on cannabinoid analgesia via the endocannabinoid system and non-receptor mechanisms, as well as randomized clinical trials employing cannabinoids in pain treatment. Tetrahydrocannabinol (THC, Marinol®) and nabilone (Cesamet®) are currently approved in the United States and other countries, but not for pain indications. Other synthetic cannabinoids, such as ajulemic acid, are in development. Crude herbal cannabis remains illegal in most jurisdictions but is also under investigation. Sativex®, a cannabis derived oromucosal spray containing equal proportions of THC (partial CB1 receptor agonist ) and cannabidiol (CBD, a non-euphoriant, anti-inflammatory analgesic with CB1 receptor antagonist and endocannabinoid modulating effects) was approved in Canada in 2005 for treatment of central neuropathic pain in multiple sclerosis, and in 2007 for intractable cancer pain. Numerous randomized clinical trials have demonstrated safety and efficacy for Sativex in central and peripheral neuropathic pain, rheumatoid arthritis and cancer pain. An Investigational New Drug application to conduct advanced clinical trials for cancer pain was approved by the US FDA in January 2006. Cannabinoid analgesics have generally been well tolerated in clinical trials with acceptable adverse event profiles. Their adjunctive addition to the pharmacological armamentarium for treatment of pain shows great promise.
The confusion compounds when one realizes that in today’s popular lexicon, the terms indica, sativa, and hybrid tend to indicate a set of effects, rather than the taxonomy of a particular strain. But that’s just as well. Most marijuana strains today, especially those under commercial cultivation, are genetic hybrids. Only a handful of pure, or “landrace” cannabis strains are in circulation.
Distinguishing cannabis and hemp can be confusing, so let's make it simple. There are many varietals of Cannabis sativa, all of which have different amounts of THC and CBD. Cannabis sativa varietals that have more than 0.3 percent THC are commonly referred to as marijuana. Hemp is any varietal of Cannabis sativa that contains less than 0.3 percent THC.
Some states only allow for products infused with CBD, some only allow for high-CBD and low-THC products, while others allow both THC and CBD. To further confuse the American citizenry, some states permit patients the use of CBD, but require that they travel to another state to purchase it. To make sense of this confounding patchwork and to learn about each individual state’s CBD laws, read the Weedmaps Laws and Regulations page.

Cannabis is mostly used for recreation or as a medicinal drug, although it may also be used for spiritual purposes. In 2013, between 128 and 232 million people used cannabis (2.7% to 4.9% of the global population between the ages of 15 and 65).[28] It is the most commonly used illegal drug both in the world and the United States.[21][28] The countries with the highest use among adults as of 2018 are Zambia, the United States, Canada, and Nigeria.[29] In 2016, 51% of people in the United States had ever used cannabis.[30] About 12% had used it in the past year, and 7.3% had used it in the past month.[31]
When the researchers evaluated the effects of PET compared with THC on inflammation pathways in mouse brains, they finally found a difference. Although PET’s psychoactive effects were less potent, it reduced certain molecules associated with inflammation, says study author Michael Schafroth, currently a postdoctoral researcher at The Scripps Research Institute.
I am a senior citizen with problem with my lower back, shoulder and neck pain, scar tissue discomfort from breast cancer surgeries, right ankle pain, doctor's diagnosed me with osteoarthritis, discomfort with closing my left hand whereas I can't make a fist, wrist pain that can cause me to drop a plate from time to time, and last but not least is knee pain even though I have had knee replacement surgery. I am in pain 24/7 and have tired to just endure without constantly taking OTC medications. I refuse to continue taking prescription medications. As I was researching about Black Seed Oil then I came up on HEMP Seed Oil. There are many strengths but I decided on the 350 mg. I read about the benefits of Hemp Seed and decided to give it a try. But before I could, I had to find the right one. There are so many hemp seed oils out there and not all are as good as the one that I selected according to reading the reviews of others. My Beyond Bliss Hemp Seed Oil was delivered very quickly and I tried it the very same day. To my amazement, the pain in my knee, hand, wrist, chest went away that very night. I woke up feeling more refreshed with a good night sleep. I still have a little discomfort with my neck and shoulders but I'm hoping that with dissipate with more intake of the Beyond Bliss Hemp Seed Oil. For most of my pain to go away within the first try; this is a miracle for me and a keeper. I've already ordered and paid for another bottle for my daughter. The company sent a 'thank you for your order card and instructions to request a free bottle'. I am so impressed that I had to order another bottle for my daughter that has problems with her knee and foot when she walks, I just could not wait for the free bottle and that's why I decided to order one for her. Again, this is a good product that should hopefully work for you. All I can say is to give this company a try, I don't feel you will go wrong.
If you live with chronic pain, you may have experienced how it can disrupt sleep and, in some cases, can contribute to anxiety and depression. Natural therapies, including exercising and taking up mind-body practices like meditation and yoga, and following an anti-inflammatory diet may help improve quality of life for some people who experience pain regularly.
The irony though, is that Cannabidiol is already legal to be sold in the form of CBD Rich Hemp finishing products used in the manufacturing of nutritional supplements and has been for some time now, but many people in these states that either do not qualify for the CBD programs, or are waiting for the laws to take effect, remain unaware that it is currently possible to legally Buy CBD Hemp Oil online.  Is cannabis oil legal? Depends where you live and what type of cannabis oil. 
Pure CBD cannabis oil derived from hemp contains only trace amounts of THC. Hemp is grown from specific cannabis varieties that naturally possess higher levels of CBD. These hemp stalks and hemp seeds produce organic hemp oil that is naturally rich in cannabidiol. Some genetic varieties of hemp contain higher concentrations of pure CBD than others.
In September 1988 Francis L.Young , the chief administrative law judge of Drug Enforcement Administration presented a sixty nine page opinion regarding cannabis, which he called marijuana. He stated that ‘marijuana in its natural form is one of the safest therapeutically active substances known to man‘ and ‘By any measure of rational analysis marijuana can be safely used within supervised routine medical care. To deny marijuana to patients who need it would be unreasonable, arbitrary and capricious‘.
However, switching to CBD oil from a conventional medication is far from a random stab in the dark. In fact, there was a large scale (and very well-documented) survey carried out less than two years ago that looked at precisely what percentage of patients were able to “swap” their side effect-inducing meds for a 100% natural, cannabis-based therapy.
Usage amounts matter in this case. If, for instance, an individual was using an extremely high dose of CBD on a daily basis, 1,000 mg, for example, they would be exposed to around 3 mg of THC per day. A dose of this size could cause a result to be positive even if the user was not consuming traditional marijuana containing standard amounts of CBD and THC.
     While these CDB laws are well intentioned and make certain types of cannabis oil legal in certain states, many of them are extremely exclusive as to what illnesses may qualify patients for use, and limit production of the plant—in most cases Charlotte's Web— to a handful of licensed facilities. These laws have drawn both praise and criticism from various groups, as many feel they stop well short of where we eventually need to be in regards to Medical Marijuana Oil and Medical Cannabis, limiting the use to only a handful of patients that are on a very short list of approved conditions and in some cases, exclusively for Epilepsy.
Cannabis use is associated with increased recruitment of task-related areas, such as the dorsolateral prefrontal cortex, which is thought to reflect compensatory activity due to reduced processing efficiency.[113][112][115] Cannabis use is also associated with downregulation of CB1 receptors. The magnitude of down regulation is associated with cumulative cannabis exposure, and is reversed after one month of abstinence.[116][117][118] There is limited evidence that chronic cannabis use can reduce levels of glutamate metabolites in the human brain.[119]
CBD and THC interact with our bodies in a variety of ways. One of the main ways they impact us is by mimicking and augmenting the effects of the compounds in our bodies called “endogenous cannabinoids” - so named because of their similarity to the compounds found in the cannabis plant. These “endocannabinoids” are part of a regulatory system called the “endocannabinoid system”.
If you are living with chronic pain, hemp offers you hope. CBD can be purchased online or over the counter in many forms in every state in the U.S., and many places around the world. The good news is CBD has a very broad safety profile, and you should feel comfortable trying it. Dosing is going to be a key, and we’ll discuss that in a later column. Taking too much won’t harm you, but it might not help you either. Please be sure to talk to your physician about CBD. In my next column, I will offer some tips for having this conversation, particularly if you feel awkward about cannabis or hemp, or suspect your doctor might react badly to your interest.

There is reasonable evidence from prospective epidemiological studies which suggests that cannabis use can precipitate schizophrenia in persons who are vulnerable because of a personal or family history of schizophrenia. There is also evidence that a genetic vulnerability to psychosis increases the risk that cannabis users will develop psychosis (McGuire et al., 1995; Arseneault et al., 2002; Verdoux et al., 2002). A casual relationship also has biological plausibility in that the cannabinoid and dopaminergic neurotransmitter systems interact in animals. D'Souza and colleagues (1999) have shown in a provocation study that THC produces a dose-dependent increase in psychotic symptoms under double-blind placebo conditions; and Caspi and colleagues (2005) have shown an interaction between specific alleles of the COMT allele and psychotogenic effects of cannabis. If these results can be replicated and extended, they will increase the likelihood that cannabis can be a contributory cause of psychosis in vulnerable individuals.


Cannador® (IKF-Berlin) is a cannabis extract administered in oral capsules, with differing figures as to THC:CBD ratios (reviewed in (Russo and Guy 2006)), generally approximately 2:1. Two pharmacokinetic studies on possibly related material have been reported (Nadulski et al 2005a; Nadulski et al 2005b). In a Phase III RCT employing Cannador in spasticity in multiple sclerosis (MS) (CAMS) (Zajicek et al 2003) (Table 1), no improvement was noted in the Ashworth Scale, but benefit was observed in spasm-associated pain on subjective measures. Both Marinol and Cannador produced reductions in pain scores in long-term follow-up (Zajicek et al 2005). Cannador was assayed in postherpetic neuralgia in 65 subjects with no observed benefit (Ernst et al 2005) (Table 1), and in 30 post-operative pain subjects (CANPOP) without opiates, with slight benefits, but prominent psychoactive sequelae (Holdcroft et al 2006) (Table 1).

The leaves, stems, flower buds and extracts from the marijuana plant can be eaten, brewed in a tea or put into a tincture. It can also be vaporized using an e-cigarette pen. Yale University researchers surveyed 3,847 Connecticut high school students about this practice in a 2015 study that was published in the journal Pediatrics. The study found nearly one in five e-cigarette users also have vaporize cannabis or byproducts like hash oil using the device. 
Cannabis research suggests medical marijuana could become an effective treatment for diabetic neuropathy. Diabetic neuropathy is a debilitating and sometimes fatal condition caused by diabetes. Diabetics suffer from high blood sugar due to insulin resistance, and this damages nerve cells in the body, causing severe pain. Patients who consumed THC as part of a study found they experienced less pain. Findings are not definitive, however, and further research into cannabis as a treatment for diabetes and associated symptoms is required.
Preliminary research indicates that cannabidiol may reduce adverse effects of THC, particularly those causing intoxication and sedation, but only at high doses.[23] Safety studies of cannabidiol showed it is well-tolerated, but may cause tiredness, diarrhea, or changes in appetite as common adverse effects.[24] Epidiolex documentation lists sleepiness, insomnia and poor quality sleep, decreased appetite, diarrhea, and fatigue.[2]
“Twenty-one of those doctors are based in New South Wales, and there are two in Queensland. All of these doctors are paediatric neurologists. They are authorised specifically to prescribe to children with neurological conditions. That means patients with other conditions, for example terminal cancer, cannot access medical cannabis through these authorised prescribers.”
Discount Nutrition store operator Anthony LaBorde and owner Mona Baker discuss the CBD oil they sell at their stores in Midtown Atlanta and Acworth. Across Georgia, stores are selling cannabidiol to the public, while registered medical marijuana patients can’t legally buy low THC oil. BOB ANDRES /BANDRES@AJC.COM Photo: The Atlanta Journal-Constitution
"Skunk" refers to several named strains of potent cannabis, grown through selective breeding and sometimes hydroponics. It is a cross-breed of Cannabis sativa and C. indica (although other strains of this mix exist in abundance). Skunk cannabis potency ranges usually from 6% to 15% and rarely as high as 20%. The average THC level in coffee shops in the Netherlands is about 18–19%.[253]
Chronic pain represents an emerging public health issue of massive proportions, particularly in view of aging populations in industrialized nations. Associated facts and figures are daunting: In Europe, chronic musculoskeletal pain of a disabling nature affects over one in four elderly people (Frondini et al 2007), while figures from Australia note that older half of older people suffer persistent pain, and up to 80% in nursing home populations (Gibson 2007). Responses to an ABC News poll in the USA indicated that 19% of adults (38 million) have chronic pain, and 6% (or 12 million) have utilized cannabis in attempts to treat it (ABC News et al 2005).
This guide is an introduction to anyone looking to inform themselves about the reality of cannabis. It covers basic information about the marijuana plant, cannabis preparations, and the crucial elements of plant anatomy and science. This guide to marijuana also gives an overview of the most popular medical and recreational uses of cannabis. It offers a survey of the most important medical cannabis research while highlighting emerging trends in the legal cannabis market. The guide also introduces those new to cannabis to the many ways to consume marijuana, and much more.
If medical marijuana is illegal in a given state, THC levels determine whether a CBD product is illicit or not. In most places, the limit is extremely low. We’re talking under 1 percent THC, with some states opting for a cap as low as 0.3 percent. In this case, the only source that would work is hemp, and CBD products will, therefore, be hemp-derived.
CBD Oil can also contain ZERO amount of THC. If this were coffee, it’s all in the grind. It still is, figuratively, for hemp CBD oil. We developed a product from listening to our customers that needed 100% certainty their oil didn’t contain trace amounts of THC. Like who? First responders, athletes, military personnel, or anyone that wants 100% confidence they’re consuming only CBD. Read more about it here. 

When privacy isn’t a requirement, outdoor cannabis grows can provide many advantages over indoor operations. Sunlight is the single most important factor for successful outdoor marijuana growing. It’s important to choose a plot with total sunshine throughout the day. Therefore, cannabis growers in the northern hemisphere will want plots with southern exposure, exposing marijuana plants to the sun’s arc across the sky.
As of 2018, there are a total of 46 states (including the 8 states mentioned above) where CBD is legal with a prescription for medicinal usage. Now although CBD usage is for legal in these states, the law varies from state to state, with 17 states having specific legislation for the THC-levels found in CBD and the conditions being treated with CBD. 

Since then, many different types of sex determination systems have been discovered, particularly in plants.[15] Dioecy is relatively uncommon in the plant kingdom, and a very low percentage of dioecious plant species have been determined to use the XY system. In most cases where the XY system is found it is believed to have evolved recently and independently.[31]
Whereas Michigan already had medical weed legalized to make for a quicker route to starting full legislation, these states don't yet have an operational system in place. North Dakota and West Virginia also still are not operational yet, nor in Louisiana or Arkansas. Ohio is also behind schedule, having been unable to meet their goal of having operational dispensaries two years after voting for legalization. And until those are operational, the Ohio Board of Pharmacy ruled that any CBD products not sold in dispensaries licensed by the state's program are illegal.
The 2018 Farm Bill was signed into law in December 2018, effectively legalizing hemp at the federal level by removing it from the federal list of controlled substances and classifying it as an agricultural commodity. As a result, CBD from hemp is legal nationwide. The Hemp Farming Act, included in the 2018 Farm Bill, is considered the most important victory in the history of the hemp industry in the United States.
Our pick for Best Customer Experience is Populum, an Arizona-based CBD brand that offers complete product transparency and great deals for shoppers. Populum offers a full spectrum CBD oil in 250mg, 500mg, and 1000mg concentrations. The product is made with cold-pressed orange oil for a light citrus taste, as well as grapeseed and coconut oils for added flavors. Populum also offers a cooling topical salve that relaxes aching joints and muscles, as well as a pet oil for dogs and cats. Additionally, the CBD oil, topical salve, and pet oil are packaged in an inexpensive ‘Starter Kit’ designed for first-time users. 

Reproduced with kind permission from the Australian Drug Foundation. References Australian Drug Foundation. Cannabis Facts. Last updated 25 Jan 2012. http://www.druginfo.adf.org.au/drug-facts/cannabis (accessed Jan 2013). Australian Drug Foundation (ADF) Vision: Healthy People, Strong Communities. Mission: Working together to prevent alcohol and other drug problems in communities.Related ArticlesCannabis psychosisUse of cannabis can cause a condition called drug-induced psychosis. Cannabis useCannabis can affect your physical and mental health with heavy cannabis use potentially causing psycCannabis: tolerance and dependenceAfter prolonged use, cannabis is addictive and people using cannabis regularly develop dependence anCannabis: withdrawal and treatmentIf a dependent person stops taking cannabis, they may experience withdrawal symptoms. Cannabis/marijuana: what are the effects?The effect of cannabis on a person depends on many factors including their size, weight and health aAdvertisement
Finally, the entire marijuana flower structure is coated with resinous crystals called trichomes. Trichomes are translucent, mushroom-like glands that form on the entire flowering structure and even the stems of the marijuana plant. These bulb-shaped glands secrete the rich, aromatic essential oils that give cannabis its smells and flavors. Trichomes also contain cannabinoids.
Now, marijuana and hemp are both members of the cannabis family, so they do share a lot of characteristics. There is, however, a crucial difference between the two–the amount of psychoactive Tetrahydrocannabinol (THC) each plant produces. While marijuana can contain up to 30% THC, hemp contains no more than 0.3% THC. In other words, marijuana can get you really high, while hemp has such a low amount of THC, that it would be impossible to get high off it.

In 2015, The Hebrew University of Israel published a study that documented the potency of single-molecule CBD extract versus the potency of whole-plant CBD-rich extract. It found that extract taken from whole plant CBD-rich cannabis is therapeutically superior to single-molecule extract. The scientists behind this study noticed that science had been utilizing pure, single-molecule CBD, which resulted in a bell-shaped dose-response curve. This means that CBD’s efficacy plummets at very high and very low doses.
The Duquenois–Levine test is commonly used as a screening test in the field, but it cannot definitively confirm the presence of cannabis, as a large range of substances have been shown to give false positives.[151] Despite this, it is common in the United States for prosecutors to seek plea bargains on the basis of positive D–L tests, claiming them to be conclusive, or even to seek conviction without the use of gas chromatography confirmation, which can only be done in the lab.[152] In 2011, researchers at John Jay College of Criminal Justice reported that dietary zinc supplements can mask the presence of THC and other drugs in urine.[153] However, a 2013 study conducted by researchers at the University of Utah School of Medicine refute the possibility of self-administered zinc producing false-negative urine drug tests.[154]
If you live with chronic pain, you may have experienced how it can disrupt sleep and, in some cases, can contribute to anxiety and depression. Natural therapies, including exercising and taking up mind-body practices like meditation and yoga, and following an anti-inflammatory diet may help improve quality of life for some people who experience pain regularly.
Our family has been making healthy oils and supplements in the Pacific Northwest for nearly 30 years. As a leader in the natural foods industry, we stake our reputation on innovating and creating the quality products our customers have come to expect. And like all of our products, our Ideal CBD Hemp Oil meets the very highest standards of excellence.
A 2011 study evaluated the effects of two non-psychoactive cannabinoids, cannabidiol (CBD) and cannabichromene (CBC), on pain management. The study concluded that, “CBD and CBC stimulated descending pathways of antinociception and caused analgesia by interacting with several target proteins involved in nociceptive control. These compounds might represent useful therapeutic agents with multiple mechanisms of action.”

What exactly is cannabidiol (CBD) and more importantly, what does it do? Those questions and more are at the heart of this comprehensive guide to one of the most fascinating and important compounds of the cannabis plant. Cannabis plants are chemical powerhouses that produce more than 400 different compounds. Not all of those compounds are unique to marijuana, of course, and appear in many other species of plants. That’s why marijuana can smell like pine trees or taste like fresh lemons. But of those 400 compounds, more than 60 of them are totally specific to the plant genus Cannabis. Scientists call these special compounds “cannabinoids.” However, not all cannabinoids are created equal. One of them, cannabidiol, or CBD, holds the key to the wide variety of medicinal and therapeutic effects marijuana offers.


The existence of substantial clinical investigations regarding CBD has been made public. For example, two such substantial clinical investigations include GW Pharmaceuticals’ investigations regarding Sativex and Epidiolex. (See Sativex Commences US Phase II/III Clinical Trial in Cancer Pain and GW Pharmaceuticals Receives Investigational New Drug (IND) from FDA for Phase 2/3 Clinical Trial of Epidiolex in the Treatment of Dravet Syndrome ).

Do you have chronic pain in your back or in your joints? Are you tired of getting expensive prescriptions that don’t really treat the core problem? Try CBD Pain Cream for real natural pain relief. † This is a new development in CBD studies. Normally cannabidiol comes in oil form. Well, researchers have developed a topical pain relief cream from CBD oil that treats pain deep within your body. † This is clinically validated cannabidiol that is proven to reduce things like pain in joints and deep muscular tissue. If you want to get rid of pain the natural and safe way without harmful pharmaceuticals, welcome to the future. Try New CBD Pain Cream today and discover a pain-free life! †
The Haleigh's Hope Act was signed by Georgia's Governor in 2016. This law has made the use of cannabis oil legal, however, it cannot contain any more than 5% THC. It can also only be used for medical reasons. CBD products from Every Day Optimal contain 0% THC and their items can only be used for medical purposes. The state believes that CBD can have an amazing impact on the lives of people all across the U.S. who are suffering from debilitating health problems.
The most commonly used form of CBD is CBD oil. Combining CBD extract with a carrier oil like coconut oil, it can be ingested or vaped, bringing a lot of variety. But because marijuana legalization is in such a murky situation with both federal and state laws to grapple with, CBD oil's legality can be hard to parse depending on where you are. Let's start with legality at the federal level.
It is for this reason that all the finished hemp goods that you see for sale in America, from food products to clothing to building materials, are part of an imported hemp industry that has surpassed $688 million annually. The size of this import industry is one of the major catalysts for hemp legalization in the U.S. As a renewable source of a range of products, hemp provides an exciting new step in American agriculture.
Some jurisdictions use free voluntary treatment programs and/or mandatory treatment programs for frequent known users. Simple possession can carry long prison terms in some countries, particularly in East Asia, where the sale of cannabis may lead to a sentence of life in prison or even execution. Political parties, non-profit organizations, and causes based on the legalization of medical cannabis and/or legalizing the plant entirely (with some restrictions) have emerged in such countries as China and Thailand.[224][225]
The other 29 states that fully legalize the Medical use of all CBD products derived from either hemp or Marijuana are: Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Hawaii, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, Vermont, Washington and West Virginia. The territories of Guam and Puerto Rico also allow the use of CBD products on medical grounds.
Until 2017, products containing cannabidiol marketed for medical purposes were classed as medicines by the UK regulatory body, the Medicines and Healthcare products Regulatory Agency (MHRA) and could not be marketed without regulatory approval for the medical claims.[91] As of 2018, cannabis oil is legal to possess, buy, and sell in the UK, providing the product does not contain more than 0.2% THC and is not advertised as providing a medicinal benefit.[92]
In 1924, Russian botanist D.E. Janichevsky concluded that ruderal Cannabis in central Russia is either a variety of C. sativa or a separate species, and proposed C. sativa L. var. ruderalis Janisch, and Cannabis ruderalis Janisch, as alternative names.[48] In 1929, renowned plant explorer Nikolai Vavilov assigned wild or feral populations of Cannabis in Afghanistan to C. indica Lam. var. kafiristanica Vav., and ruderal populations in Europe to C. sativa L. var. spontanea Vav.[53][62] In 1940, Russian botanists Serebriakova and Sizov proposed a complex classification in which they also recognized C. sativa and C. indica as separate species. Within C. sativa they recognized two subspecies: C. sativa L. subsp. culta Serebr. (consisting of cultivated plants), and C. sativa L. subsp. spontanea (Vav.) Serebr. (consisting of wild or feral plants). Serebriakova and Sizov split the two C. sativa subspecies into 13 varieties, including four distinct groups within subspecies culta. However, they did not divide C. indica into subspecies or varieties.[48][64] 
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