The question of whether heteromorphic sex chromosomes are indeed present is most conveniently answered if such chromosomes were clearly visible in a karyotype. Cannabis was one of the first plant species to be karyotyped; however, this was in a period when karyotype preparation was primitive by modern standards (see History of Cytogenetics). Heteromorphic sex chromosomes were reported to occur in staminate individuals of dioecious "Kentucky" hemp, but were not found in pistillate individuals of the same variety. Dioecious "Kentucky" hemp was assumed to use an XY mechanism. Heterosomes were not observed in analyzed individuals of monoecious "Kentucky" hemp, nor in an unidentified German cultivar. These varieties were assumed to have sex chromosome composition XX.[32] According to other researchers, no modern karyotype of Cannabis had been published as of 1996.[33] Proponents of the XY system state that Y chromosome is slightly larger than the X, but difficult to differentiate cytologically.[34]
I have severe neuropathy in both feet and legs. I just got the CBD oil and I am interested in learning if anyone out there has had any success with this. I know each case and pain levels are different. Just would like to see some positive remarks from people who suffer with it. I am not looking for a cure just need an update on someone who took and it helped. I already know there is no cure. I need help with the pain. Thank you.
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In 2014, President Obama signed the Farm Bill of 2014 into law. This law contained a section that removed hemp from Schedule 1 of the Controlled Substances Act. It also created a legal structure that made cultivation and research of hemp legal in states that wanted to initiate “Pilot Research Programs” into the cultivation and marketing of hemp and hemp-derived products.
In a July 1998 study issued by the Center for Business and Economic Research at the University of Kentucky, researchers concluded that Kentucky hemp farmers could earn a net profit of $600 per acre for raising certified seeds, $320 net profit per acre for straw only or straw and grain production, and $220 net profit per acre for grain only production. The only crop found to be more profitable was tobacco.
PTSD. My husband suffers chronic PTSD from active military service. We live not far from a large Army base and though my husband served with another counties military we hear stories constantly of family breakdowns over PTSD. It’s not a easy path but I’m hoping one day to find something to stop the endless trips to the psych ward. It’s just not right that those who serve come home to no government help.
Several studies have demonstrated the therapeutic effects of cannabinoids for nausea and vomiting in the advanced stages of illnesses such as cancer and AIDS. Dronabinol (tetrahydrocannabinol) has been available by prescription for more than a decade in the USA. Other therapeutic uses of cannabinoids are being demonstrated by controlled studies, including treatment of asthma and glaucoma, as an antidepressant, appetite stimulant, anticonvulsant and anti-spasmodic, research in this area should continue. For example, more basic research on the central and peripheral mechanisms of the effects of cannabinoids on gastrointestinal function may improve the ability to alleviate nausea and emesis. More research is needed on the basic neuropharmacology of THC and other cannabinoids so that better therapeutic agents can be found.

Results of a Phase III study (N = 177) comparing Sativex, THC-predominant extract and placebo in intractable pain due to cancer unresponsive to opiates (Johnson and Potts 2005) demonstrated that Sativex produced highly statistically significant improvements in analgesia (Table 1), while the THC-predominant extract failed to produce statistical demarcation from placebo, suggesting the presence of CBD in the Sativex preparation was crucial to attain significant pain relief.


The plant was first given its taxonomic identification by Carl Linnaeus in 1753 and thoroughly described to Westerners in the 1800s, when the medical doctor William O'Shaughnessy gave a report to the Medical and Physical Society of Calcutta in India in 1839. The doctor described its effects on people and did a few case reports on "gunjah," the Indian name for the drug.
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Based on reviews, smoking or vaporizing CBD vape oil seems to have less effects when compared to other methods of administering CBD, such as tinctures, capsules and sprays. On the flip side, others argue that smoking or vaporizing has less drawbacks than taking CBD orally, since ingesting CBD orally could result in inconsistent absorption and a delayed effect.


Cannabis plants produce a unique family of terpeno-phenolic compounds called cannabinoids, some of which produce the "high" which may be experienced from consuming marijuana. There are 483 identifiable chemical constituents known to exist in the cannabis plant,[49] and at least 85 different cannabinoids have been isolated from the plant.[50] The two cannabinoids usually produced in greatest abundance are cannabidiol (CBD) and/or Δ9-tetrahydrocannabinol (THC), but only THC is psychoactive.[51] Since the early 1970s, Cannabis plants have been categorized by their chemical phenotype or "chemotype", based on the overall amount of THC produced, and on the ratio of THC to CBD.[52] Although overall cannabinoid production is influenced by environmental factors, the THC/CBD ratio is genetically determined and remains fixed throughout the life of a plant.[37] Non-drug plants produce relatively low levels of THC and high levels of CBD, while drug plants produce high levels of THC and low levels of CBD. When plants of these two chemotypes cross-pollinate, the plants in the first filial (F1) generation have an intermediate chemotype and produce intermedite amounts of CBD and THC. Female plants of this chemotype may produce enough THC to be utilized for drug production.[52][53]
Tia has been Live Science's associate editor since 2017. Prior to that, Tia was a senior writer for the site, covering physics, archaeology and all things strange. Tia's work has appeared in Scientific American, Wired.com, and the Milwaukee Journal Sentinel. Tia grew up in Texas and has an undergraduate degree in mechanical engineering from the University of Texas at Austin, a master's degree in bioengineering from the University of Washington and a graduate certificate in science writing from the University of California Santa Cruz. When she's not editing stories, Tia enjoys reading dystopian fiction and hiking.
It is clear that there is a culture of idealistic believers in hemp in North America, and that there is great determination to establish the industry. As history has demonstrated, unbridled enthusiasm for largely untested new crops touted as gold mines sometimes leads to disaster. The attempt to raise silk in the US is probably the most egregious example. In 1826 a Congressional report that recommended the preparation of a practical manual on the industry resulted in a contagious desire to plant mulberries for silk production, with the eventual collapse of the industry, the loss of fortunes, and a legacy of “Mulberry Streets” in the US (Chapter 2, Bailey 1898). In the early 1980s in Minnesota, Jerusalem artichoke was touted as a fuel, a feed, a food, and a sugar crop. Unfortunately there was no market for the new “wonder crop” and hundreds of farmers lost about $20 million (Paarlberg 1990). The level of “hype” associated with industrial hemp is far more than has been observed before for other new crops (Pinfold Consulting 1998). Probably more so than any plant in living memory, hemp attracts people to attempt its cultivation without first acquiring a realistic appreciation of the possible pitfalls. American presidents George Washington and Thomas Jefferson encouraged the cultivation of hemp, but both lost money trying to grow it. Sadly in Canada in 1999 numerous farmers contracted to grow half of Canada’s crop area for hemp for the American-based Consolidated Growers and Processors, and with the collapse of the firm were left holding very large amounts of unmarketable grain and baled hemp straw. This has represented a most untimely setback for a fledgling industry, but at least has had a sobering effect on investing in hemp. In this section we emphasize why producers should exercise caution before getting into hemp.
"Hemp fields, in fact, could be a deterrent to marijuana growers. A strong case can be made that the best way to reduce the THC level of marijuana grown outdoors would be to grow industrial hemp near it. An experiment in Russia found that hemp pollen could travel 12 kilometers. This would mean that a hemp field would create a zone with a 12-kilometer radius within which no marijuana grower would want to establish a crop.
For those wondering does hemp CBD oil for pain relief really work? There have been many studies that have demonstrated that using CBD is one of the most effective means of helping people who are suffering from chronic forms of pain. For those who have had injuries or ailments that have caused debilitating pain even for a short period of time, there is truly nothing they want more than to see this pain reduced, if not removed all together. This has been of the great benefits of cannabidiol oil.
^ Crean RD, Crane NA, Mason BJ (March 2011). "An evidence based review of acute and long-term effects of cannabis use on executive cognitive functions". Journal of Addiction Medicine. 5 (1): 1–8. doi:10.1097/ADM.0b013e31820c23fa. PMC 3037578. PMID 21321675. Cannabis appears to continue to exert impairing effects in executive functions even after 3 weeks of abstinence and beyond. While basic attentional and working memory abilities are largely restored, the most enduring and detectable deficits are seen in decision-making, concept formation and planning.
Hemp is possibly one of the earliest plants to be cultivated.[109][110] An archeological site in the Oki Islands near Japan contained cannabis achenes from about 8000 BC, probably signifying use of the plant.[111] Hemp use archaeologically dates back to the Neolithic Age in China, with hemp fiber imprints found on Yangshao culture pottery dating from the 5th millennium BC.[108][112] The Chinese later used hemp to make clothes, shoes, ropes, and an early form of paper.[108] The classical Greek historian Herodotus (ca. 480 BC) reported that the inhabitants of Scythia would often inhale the vapors of hemp-seed smoke, both as ritual and for their own pleasurable recreation.[113]

"Skin dryness and itchiness, in particular, are very serious problems in atopic dermatitis, which often lead to additional complications, such as opportunistic infections. In any event, it seems that the reduction of atopic symptomology observed in this study is a direct result of ingested hempseed oil. These preliminary results confirm anecdotal observations of improved skin quality after ingesting modest amounts of hempseed oil on a daily basis over a relatively short period of time."
Even those who are facing issues related to mental health should consult their physician. Research studies continue to examine the effects and benefits of this drug far beyond just anxiety and depression. The benefits for those facing schizophrenia may be just the tip of the iceberg, as this may help with such conditions as mania and other forms of psychosis with further research.

would take the oil and put about 2 or 3 dots behind his knee and to his surprise, the tingling went away right away. I found this hard to believe, but after hearing from some other people on the benefits of CBD, I decided to give it a try. It didn’t come cheap. I had to pay 50 dollars for an oz. but it was whole plant in full spectrum. The first night that I got restless leg syndrome and went into the bathroom and put 3 dots behind my knees on both legs it was only a matter of seconds before I


In the United Kingdom, cultivation licences are issued by the Home Office under the Misuse of Drugs Act 1971. When grown for nondrug purposes, hemp is referred to as industrial hemp, and a common product is fibre for use in a wide variety of products, as well as the seed for nutritional aspects and for the oil. Feral hemp or ditch weed is usually a naturalized fibre or oilseed strain of Cannabis that has escaped from cultivation and is self-seeding.[91]

The overall effect is not assured because, like cannabis — which is illegal under U.S. federal law although some states have allowed medical or recreational use — states will continue to be able to enact laws related to industrial hemp, allowing for a potential patchwork of legislation across the country. Other questions remain in terms of how exactly the Agriculture Department will regulate the plant.
Dispensaries are charging 30 bucks and ounce for Hemp Oil so they have no economic incentive to derive the CBD from Marijuana. I found that it was like pulling teeth, just to get the to admit the CBD oil came from Hemp. They isolate the CBD and then add it back to the Oil. This means there is no THC or Terpenes or any of the beneficial compounds found in marijuana.
Hemp plants are almost always cultivated outdoors, as opposed to marijuana plants, which are mostly planted in greenhouse or indoor settings. Because hemp is susceptible to the same predators diseases and insects that attack marijuana, the hemp industry employs a technique called crop rotation, in which alternating crops are planted in the same place, to avoid any buildup of these organisms and allow nutrients to return to the soil. The specific order of crop rotation and types of crops being rotated with hemp will depend on the location of the farm. Hemp is also used as a rotational crop at farms where it is not the primary agricultural product.
The word cannabis is from Greek κάνναβις (kánnabis) (see Latin cannabis),[135] which was originally Scythian or Thracian.[136] It is related to the Persian kanab, the English canvas and possibly even to the English hemp (Old English hænep).[136] In modern Hebrew, קַנַּבּוֹס qannabōs (modern pronunciation: [kanaˈbos]) is used but there are those who have theorized that it was referred to in antiquity as קני בושם q'nei bosem, a component of the biblical anointing oil.[137][138] Old Akkadian qunnabtu, Neo-Assyrian and Neo-Babylonian qunnabu were used to refer to the plant meaning "a way to produce smoke".[139][140][141]
I am currently going through red skin syndrome/topical steroid withdrawal. The only cure as of now is time(6 months to 3 years) and waiting out horrible eczema-like flares. My main issue is burning/tingling skin that is almost constant. Steroids close off blood vessels and when you stop them they 'wake' up causing this nerve discomfort/pain. I've been smoking medical cannabis for the duration of my recovery(1.5 years) and It's done wonders except that the flare is around my mouth and I'm afraid the smoking is causing more issues.. as well as helping. I need to step up my game and take a different approach. I am wondering how to go about using cbd but I don't know where to start and was wondering if you could help. Thank you
We need proper studies, the panel concluded, on the health effects of cannabis on children and teen-agers and pregnant women and breast-feeding mothers and “older populations” and “heavy cannabis users”; in other words, on everyone except the college student who smokes a joint once a month. The panel also called for investigation into “the pharmacokinetic and pharmacodynamic properties of cannabis, modes of delivery, different concentrations, in various populations, including the dose-response relationships of cannabis and THC or other cannabinoids.”
If you live with the pain of arthritis every day, you may find yourself cycling through numerous treatments trying to find relief. Some of these treatments may cause complications, adding to the distress of your arthritis. Applying a CBD Salve for arthritis pain can provide you with a path to relief without any harmful side effects. Below you will find out what you will receive with a Hemp Bombs CBD Pain Freeze and the benefits it provides ...
France is Europe's biggest producer (and the world's second largest producer) with 8,000 hectares (20,000 acres) cultivated.[85] 70–80% of the hemp fibre produced in 2003 was used for specialty pulp for cigarette papers and technical applications. About 15% was used in the automotive sector, and 5-6% was used for insulation mats. About 95% of hurds were used as animal bedding, while almost 5% was used in the building sector.[14] In 2010/2011, a total of 11,000 hectares (27,000 acres) was cultivated with hemp in the EU, a decline compared with previous year.[72][86]
"Comparisons of industrial hemp to hydrocarbon or other conventional industrial feedstocks show that, generally, hemp requires substantially less energy for manufacturing, often is suited to less-toxic means of processing, and provides competitive product performance (especially in terms of durability, light weight, and strength), greater recyclability and/or biodegradability, and a number of value-added applications for byproducts and waste materials at either end of the product life cycle."
There has been little high-quality research into the use of cannabidiol for epilepsy, and what there is is limited to refractory epilepsy in children.[16] While the results of using medical-grade cannabidiol in combination with conventional medication shows some promise, they did not lead to seizures being eliminated, and were associated with some minor adverse effects.[16] 

Wild North American hemp is derived mostly from escaped European cultivated hemp imported in past centuries, perhaps especially from a revival of cultivation during World War II. Wild Canadian hemp is concentrated along the St. Lawrence and lower Great Lakes, where considerable cultivation occurred in the 1800s. In the US, wild hemp is best established in the American Midwest and Northeast, where hemp was grown historically in large amounts. Decades of eradication have exterminated many of the naturalized populations in North America. In the US, wild plants are rather contemptuously called “ditch weed” by law enforcement personnel. However, the attempts to destroy the wild populations are short-sighted, because they are a natural genetic reservoir, mostly low in THC. Wild North American plants have undergone many generations of natural adaptation to local conditions of climate, soil and pests, and accordingly it is safe to conclude that they harbor genes that are invaluable for the improvement of hemp cultivars. We have encountered exceptionally vigorous wild Canadian plants (Fig. 52), and grown wild plants from Europe (Fig. 53) which could prove valuable. Indeed, studies are in progress in Ontario to evaluate the agronomic usefulness of wild North American hemp. Nevertheless, present policies in North America require the eradication of wild hemp wherever encountered. In Europe and Asia, there is little concern about wild hemp, which remains a valuable resource.

Cognitive effects of cannabis have been reviewed (Russo et al 2002; Fride and Russo 2006), but less study has occurred in therapeutic contexts. Effects of chronic heavy recreational cannabis usage on memory abate without sequelae after a few weeks of abstinence (Pope et al 2001). Studies of components of the Halstead-Reitan battery with Sativex in neuropathic pain with allodynia have revealed no changes vs placebo (Nurmikko et al 2007), and in central neuropathic pain in MS (Rog et al 2005), 4 of 5 tests showed no significant differences. While the Selective Reminding Test did not change significantly on Sativex, placebo patients displayed unexpected improvement.
The 2014 Agricultural Act, more commonly known as the 2014 Farm Bill, signed by Democratic President Barack Obama, includes section 7606, which allows for universities and state departments of agriculture to cultivate industrial hemp, as long as it is cultivated for the purpose of research. Under the 2014 Agricultural act, state departments and universities must also be registered with their state, and defer to state laws and regulations for approval to grow hemp.
Cannabinoids are divided into three groups. The first are naturally occurring 21-carbon terpenophenolic compounds found to date solely in plants of the Cannabis genus, currently termed phytocannabinoids (Pate 1994). The best known analgesic of these is Δ9-tetrahydrocannabinol (henceforth, THC)(Figure 1), first isolated and synthesized in 1964 (Gaoni and Mechoulam 1964). In plant preparations and whole extracts, its activity is complemented by other “minor” phytocannabinoids such as cannabidiol (CBD) (Figure 1), cannabis terpenoids and flavonoids, as will be discussed subsequently.
Specific city and county laws have been enacted to regulate how citizens and tourists may possess and consume marijuana. Penalties exist for driving while under the influence of marijuana. Someone driving under the influence of marijuana is considered impaired in both Colorado and Washington when five nanograms per milliliter (ng/mL) of blood or more of active THC is detected.
One of the most experienced practitioners in this field is Los Angeles physician Bonni Goldstein, who has used the compound to treat dozens of children with intractable epilepsy. She says about half of these patients have seen a significant drop in the number of seizures. “Used in the right way, with the right patient, CBD is extremely powerful,” she says.
Unlike other CBD oils, PureKana really does excel in CBD oil extractions due to their unique CO2 extraction process which provides a near 99% pure CBD oil. PureKana Natural CBD Oil is an unflavored, dietary and nutritional supplement for increased health and vitality. It is extremely effective in treating chronic pain, inflammation, swelling, anxiety and sleep disorders.

Sativex® (GW Pharmaceuticals) is an oromucosal whole cannabis-based spray combining a CB1 partial agonist (THC) with a cannabinoid system modulator (CBD), minor cannabinoids and terpenoids plus ethanol and propylene glycol excipients and peppermint flavoring (McPartland and Russo 2001; Russo and Guy 2006). It was approved by Health Canada in June 2005 for prescription for central neuropathic pain in multiple sclerosis, and in August 2007, it was additionally approved for treatment of cancer pain unresponsive to optimized opioid therapy. Sativex is a highly standardized pharmaceutical product derived from two Cannabis sativa chemovars following Good Agricultural Practice (GAP) (de Meijer 2004), yielding Tetranabinex® (predominantly-THC extract) and Nabidiolex® (predominantly-CBD extract) in a 1:1 ratio. Each 100 μL pump-action oromucosal Sativex spray actuation provides 2.7 mg of THC and 2.5 mg of CBD. Pharmacokinetic data are available, and indicate plasma half lives of 85 minutes for THC, 130 minutes for 11-hydroxy-THC and 100 minutes for CBD (Guy and Robson 2003). Sativex effects commence in 15–40 minutes, an interval that permits symptomatic dose titration. A very favorable adverse event profile has been observed in over 2500 patient years of exposure in over 2000 experimental subjects. Patients most often ascertain an individual stable dosage within 7–10 days that provides therapeutic relief without unwanted psychotropic effects (often in the range of 8–10 sprays per day). In all RCTs, Sativex was adjunctively added to optimal drug regimens in subjects with intractable symptoms, those often termed “untreatable.” Sativex is also available by named patient prescription in the UK and the Catalonia region of Spain. An Investigational New Drug (IND) application to study Sativex in advanced clinical trials in the USA was approved by the FDA in January 2006 in patients with intractable cancer pain.
Australia's National Cannabis Prevention and Information Centre (NCPIC) states that the buds (flowers) of the female cannabis plant contain the highest concentration of THC, followed by the leaves. The stalks and seeds have "much lower THC levels".[162] The UN states that leaves can contain ten times less THC than the buds, and the stalks one hundred times less THC.[159]
Researchers think that CBD interacts with receptors in your brain and immune system. Receptors are tiny proteins attached to your cells that receive chemical signals from different stimuli and help your cells respond. This creates anti-inflammatory and painkilling effects that help with pain management. This means that CBD oil may benefit people with chronic pain, such as chronic back pain.
The 2018 Farm Bill will radically overhaul America’s relation to hemp and could unleash a hemp renaissance in the coming years that will close the gap between the U.S. and China. As a Schedule 1 substance alongside marijuana, hemp farmers and entrepreneurs in the U.S. have faced many barriers to doing business. Interstate commerce for hemp products was almost non-existent and financing was difficult to come by. But all that is set to change.
A 2012 review found that the THC content in marijuana had increased worldwide from 1970 to 2009.[160] It is unclear, however, whether the increase in THC content has caused people to consume more THC or if users adjust based on the potency of the cannabis. It is likely that the higher THC content allows people to ingest less tar. At the same time, CBD levels in seized samples have lowered, in part because of the desire to produce higher THC levels and because more illegal growers cultivate indoors using artificial lights. This helps avoid detection but reduces the CBD production of the plant.[161]

In a SAFEX study of Phase III double-blind RCT in 160 subjects with various symptoms of MS (Wade et al 2004), 137 patients elected to continue on Sativex after the initial study (Wade et al 2006). Rapid declines were noted in the first twelve weeks in pain VAS (N = 47) with slower sustained improvements for more than one year. During that time, there was no escalation of dose indicating an absence of tolerance to the preparation. Similarly, no withdrawal effects were noted in a subset of patients who voluntarily stopped the medicine abruptly. Upon resumption, benefits resumed at the prior established dosages.
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