Its sturdy fibers have also been put to growing use in high-quality plastics and auto paneling, durable building materials, and other common industrial commodities. And when it comes to environmental impact, hemp is not only a low-fuss crop capable of flourishing in US farmland; it can also clean up tainted water and soil, bully weeds away, and be converted into biodiesel.
Although the environmental and biodiversity benefits of growing hemp have been greatly exaggerated in the popular press, C. sativa is nevertheless exceptionally suitable for organic agriculture, and is remarkably less “ecotoxic” in comparison to most other crops (Montford and Small 1999b). Figure 50 presents a comparison of the ecological friendliness of Cannabis crops (fiber, oilseed, and narcotics) and 21 of the world’s major crops, based on 26 criteria used by Montford and Small (1999a) to compare the ecological friendliness of crops.
Cannabis use for medicinal purposes dates back at least 3,000 years.[1-5] It was introduced into Western medicine in 1839 by W.B. O’Shaughnessy, a surgeon who learned of its medicinal properties while working in India for the British East India Company. Its use was promoted for reported analgesic, sedative, anti-inflammatory, antispasmodic, and anticonvulsant effects.
Medical cannabis (or medical marijuana) refers to the use of cannabis and its constituent cannabinoids, to treat disease or improve symptoms. Cannabis is used to reduce nausea and vomiting during chemotherapy, to improve appetite in people with HIV/AIDS, and to treat chronic pain and muscle spasms. Cannabinoids are under preliminary research for their potential to affect stroke.
There are new CBD companies coming online every week – these span the range from truly awful to really great. So how to choose the best? The quality of the CBD oil itself is obviously the most important factor – and many companies do take the quality of their products seriously. To reward those companies, we gave more weight to the quality of the product than any other category.
Touted as a “superfood” containing a highly concentrated balance of proteins (less than soybeans, but much higher than wheat, oats, rye, corn, or barley), hemp seeds contain a balanced 1:3 ratio of omega-3 and omega-6 essential fatty acids (“essential” meaning your body can’t produce it, so it has to come from an outside source). This amounts to more than any fish and most fish oil supplements. They also offer super omega-3 stearidonic acid and super omega-6-gamma-linolenic acid (which the North American diet seriously lacks). Between these compounds, you get reduced inflammation, improved brain function, and lowered blood pressure, cholesterol, stroke, and heart disease risk, as well as increased energy and potential weight loss.
The endocannabinoid system is believed to be centrally involved in the regulation of mood and the extinction of aversive memories. Animal studies have shown CBD to have anxiolytic properties. It was shown in rats that these anxiolytic properties are mediated through unknown mechanisms. Anxiolytic effects of CBD have been shown in several animal models.[53,54]
In the past few years, just such a cure has seemingly presented itself. Amid the less common remedies that can be found on the internet—special diets, meditation, biofeedback, surgical implants—a new product has recently gained prominence: CBD oil (sometimes known simply as “hemp oil”), so named for its chief chemical compound, cannabidiol, which occurs naturally in cannabis plants. In online forums and news articles, CBD has been hailed as a new frontier in epilepsy treatment, with parents testifying that it managed to stop their children’s seizures when nothing else could.
Traditionally, hemp stalks would be water-retted first before the fibers were beaten off the inner hurd by hand, a process known as scutching. As mechanical technology evolved, separating the fiber from the core was accomplished by crushing rollers and brush rollers that would produce a nearly clean fiber. After the Marijuana Tax Act was implemented in 1938, the technology for separating the fibers from the core remained "frozen in time".
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Those warning letters aside, there’s not a lot of federal oversight right now over the claims being made or the products that are being sold. Cohen warned against buying CBD products online, because “there’s a lot of scams out there.” Yet his clinic sells CBD, and he admits, “I say ‘Don’t buy online,’ but ours is worth doing, because we know what we’re doing. We ship all over.”
Pain management improves a patient’s quality of life throughout all stages of cancer. Through the study of cannabinoid receptors, endocannabinoids, and synthetic agonists and antagonists, the mechanisms of cannabinoid-induced analgesia have been analyzed.[Level of evidence:1iC] The CB1 receptor is found in the central nervous system (CNS) and in peripheral nerve terminals. CB2 receptors are located mainly in peripheral tissue and are expressed in only low amounts in the CNS. Whereas only CB1 agonists exert analgesic activity in the CNS, both CB1 and CB2 agonists have analgesic activity in peripheral tissue.[48,49]
Cannabis Ruderalis – Thought to be a cannabis species originating in central Asia, it flowers earlier, is much smaller, and can withstand much harsher climates than either Cannabis indica or Cannabis sativa. This species purportedly buds based on age rather than changes in length of daylight, known as auto-flowering. It’s used primarily for food production, such as hemp seeds and hemp seed oil.
Hemp production has been legalized in North Carolina, but only as part of the state's pilot program as allowed under federal law. As such, it will still be awhile before the first fields are planted. The N.C. General Assembly passed Senate Bill 313 in 2015, allowing the Industrial Hemp Commission to develop the rules and licensing structure necessary to stay within federal laws. The law was modified in 2016 in House Bill 992. The Industrial Hemp Commission adopted temporary rules for review in February 2017. The Rules Review Commission of the Office of Administrative Hearings voted to approve these rules Feb. 16.
Despite its designation as having no medicinal use, Cannabis was distributed by the U.S. government to patients on a case-by-case basis under the Compassionate Use Investigational New Drug program established in 1978. Distribution of Cannabis through this program was closed to new patients in 1992.[1-4] Although federal law prohibits the use of Cannabis, Figure 1 below shows the states and territories that have legalized Cannabis use for medical purposes. Additional states have legalized only one ingredient in Cannabis, such as cannabidiol (CBD), and are not included in the map. Some medical marijuana laws are broader than others, and there is state-to-state variation in the types of medical conditions for which treatment is allowed.
Hemp is considered by a 1998 study in Environmental Economics to be environmentally friendly due to a decrease of land use and other environmental impacts, indicating a possible decrease of ecological footprint in a US context compared to typical benchmarks. A 2010 study, however, that compared the production of paper specifically from hemp and eucalyptus concluded that "industrial hemp presents higher environmental impacts than eucalyptus paper"; however, the article also highlights that "there is scope for improving industrial hemp paper production". Hemp is also claimed to require few pesticides and no herbicides, and it has been called a carbon negative raw material. Results indicate that high yield of hemp may require high total nutrient levels (field plus fertilizer nutrients) similar to a high yielding wheat crop.
Industrial hemp is from the plant species Cannabis sativa and has been used worldwide to produce a variety of industrial and consumer products. Hemp is a source of fiber and oilseed grown in more than 30 nations. In the United States production is controlled under drug enforcement laws. To produce industrial hemp in the United States the grower must obtain a permit from the Drug Enforcement Agency (DEA).
Cement (Concrete) and Plaster. Utilizing the ancient technique of reinforcing clay with straw to produce reinforced bricks for constructing domiciles, plant fibers have found a number of comparable uses in modern times. Hemp fibers added to concrete increase tensile strength while reducing shrinkage and cracking. Whole houses have been made based on hemp fiber (Fig. 24, 25). In North America, such usage has only reached the level of a cottage industry. Fiber-reinforced cement boards and fiber-reinforced plaster are other occasionally produced experimental products. Hemp fibers are produced at much more cost than wood chips and straw from many other crops, so high-end applications requiring high strength seem most appropriate.
Van Roekel (1994) has pointed out that Egyptian papyrus sheets are not “paper,” because the fiber strands are woven, not “wet-laid;” the oldest surviving paper is over 2,000 years of age, from China, and was made from hemp fiber (Fleming and Clarke 1998). Until the early 19th century, hemp, and flax were the chief paper-making materials. In historical times, hemp rag was processed into paper. Using hemp directly for paper was considered too expensive, and in any event the demand for paper was far more limited than today. Wood-based paper came into use when mechanical and chemical pulping was developed in the mid 1800s in Germany and England. Today, at least 95% of paper is made from wood pulp.
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. 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. Soon thereafter, Schaffner disputed Hirata's interpretation, 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.
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
THC and its major (inactive) metabolite, THC-COOH, can be measured in blood, urine, hair, oral fluid or sweat using chromatographic techniques as part of a drug use testing program or a forensic investigation of a traffic or other criminal offense. The concentrations obtained from such analyses can often be helpful in distinguishing active use from passive exposure, elapsed time since use, and extent or duration of use. These tests cannot, however, distinguish authorized cannabis smoking for medical purposes from unauthorized recreational smoking. Commercial cannabinoid immunoassays, often employed as the initial screening method when testing physiological specimens for marijuana presence, have different degrees of cross-reactivity with THC and its metabolites. Urine contains predominantly THC-COOH, while hair, oral fluid and sweat contain primarily THC. Blood may contain both substances, with the relative amounts dependent on the recency and extent of usage.
Liquid CBD Oil/Tinctures/Extracts: Drops or tinctures should have a “suggested serving size” and the total milligrams of CBD listed on their packaging. From there, you can determine the amount of CBD you would like to ingest. Simply place the correct quantity of drops under your tongue using the dropper and hold the CBD oil in place for a minimum of 60 seconds. The 60 second hold allows for absorption via the blood vessels underneath your tongue – efficiently bypassing first-pass metabolism. Once 60 seconds has passed, swallow the CBD oil.
In Canada, the methodology used for analyses and sample collection for THC analysis of hemp plantings is standardized (at the Health Canada/Therapeutics Program/Hemp web site at www.hc-sc.gc.ca/hpb-dgps/therapeut/htmleng/hemp.html, see “Industrial Hemp Technical Manual” for procedures on sampling plant materials and chemical procedures for determining THC levels). The regulations require that one of the dozen independent laboratories licensed for the purpose conduct the analyses and report the results to Health Canada. Sample collection is also normally carried out by an independent authorized firm. The Canadian system of monitoring THC content has rigidly limited hemp cultivation to cultivars that consistently develop THC levels below 0.3%.
Then came World War II. The Japanese attack on Pearl Harbor shut off foreign supplies of "manila hemp" fiber from the Philippines. The USDA produced a film called "Hemp For Victory" to encourage U.S. farmers to grow hemp for the war effort. The U.S. government formed the War Hemp Industries Department and subsidized hemp cultivation. During the war, U.S. farmers grew about a million acres of hemp across the Midwest as part of that program.
In Europe and Asia, hemp farming has been conducted for millennia. Although most countries ceased growing hemp after the second word war, some didn’t, including France, China, Russia, and Hungary, so that essential knowledge of how to grow and process hemp was maintained. When commercial hemp cultivation resumed in Canada in 1997, many farmers undertook to grow the crop without appreciating its suitability for their situation, or for the hazards of an undeveloped market. Hemp was often grown on farms with marginal incomes in the hopes that it was a savior from a downward financial spiral. The myth that hemp is a wonder crop that can be grown on any soil led some to cultivate on soils with a history of producing poor crops; of course, a poor crop was the result.
Cannabis lowers the pressure in the eye that causes optic nerve damage leading to glaucoma. Research has shown conclusively that marijuana users experience lower internal eye pressure while the body metabolizes THC. However, the psychoactive side effects of using THC to treat glaucoma make cannabis a nonviable medication for most people with the disease.
Industrial hemp is a versatile agricultural plant which could one day be a valuable crop option for Pennsylvania farmers. The Commonwealth of Pennsylvania has taken some important steps toward making that a reality. Following Governor Wolf’s signing of the Industrial Hemp Research Act, Number 92 in 2016, the Pennsylvania Department of Agriculture’s Industrial Hemp Research Pilot Program started issuing permits for research & growth of industrial hemp in 2017. Pennsylvania’s industrial hemp legislation was sparked by the passage of the 2014 Farm Bill, which gave federal permission for institutions of higher education or state Departments of Agriculture to research the cultivation and marketing of industrial hemp. As part of Pennsylvania’s Research Pilot Program, industrial hemp was legally grown in the Commonwealth after an 80 years hiatus. The Department of Agriculture has issued 35 research permits in the last two years to institutions of higher education and to farmers, business or individuals in contract with the Department to participate in the research of industrial hemp cultivation and marketing in Pennsylvania. In 2018, 35 research permits were issued to researchers, who cultivated industrial hemp in 25 Pennsylvania counties.
To this point, CBD oil has existed in a kind of liminal space— at once an illegal drug, a legal medication, and some kind of “dietary” supplement. It’s possible this could change in the coming years, however. GW Pharmaceuticals, a U.K.-based firm, has developed a “pure CBD” medication called Epidiolex that has shown promising test results. It is currently on a fast-track to receive FDA clearance. For some patients, Epidiolex could be a miracle cure. This summer, in Wired magazine, writer Fred Vogelstein chronicled his family’s own struggles to find an effective treatment for his son’s epilepsy—including experiments with hemp oil— and the immense hurdles they overcame to gain access to Epidiolex prior to its FDA approval. The drug could be for sale on pharmacy shelves in the near future, though exactly how near is hard to say.
Various strains of "medical marijuana" are found to have a significant variation in the ratios of CBD-to-THC, and are known to contain other non-psychotropic cannabinoids. Any psychoactive marijuana, regardless of its CBD content, is derived from the flower (or bud) of the genus Cannabis. Non-psychoactive hemp (also commonly-termed industrial hemp), regardless of its CBD content, is any part of the cannabis plant, whether growing or not, containing a ∆-9 tetrahydrocannabinol concentration of no more than three-tenths of one percent (0.3%) on a dry weight basis. Certain standards are required for legal growing, cultivating and producing the hemp plant. The Colorado Industrial Hemp Program registers growers of industrial hemp and samples crops to verify that the THC concentration does not exceed 0.3% on a dry weight basis.
The seeds are sown from mid-April to mid-May with grain drills to 4–6 cm sowing depth. Hemp needs less fertilizer than corn does. A total of 60–150 kg of nitrogen, 40–140 kg phosphorus (P2O5) and 75–200 kg of potassium  per acre for hemp fiber made before sowing and again later, maybe three to four weeks. When practiced, especially in France double use of fiber and seed fertilization with nitrogen doses up to 100 kg / ha rather low. Organic fertilizers such as manure can utilize industrial hemp well. Neither weeds nor crop protection measures are necessary.