CBD has proven neuroprotective effects and its anti-cancer properties are being investigated at several academic research centers in the United States and elsewhere. A 2010 brain cancer study by California scientists found that CBD “enhances the inhibitory effects of THC on human glioblastoma cell proliferation and survival.” This means that CBD makes THC even more potent as an anticancer substance. Also in 2010, German researchers reported that CBD stimulates neurogenesis, the growth of new brain cells, in adult mammals.
Dr. Devinsky’s research, which was recently published in The New England Journal of Medicine, is beginning to provide that much-needed data in the field of epilepsy research. In a landmark multinational randomized double-blind study for a treatment-resistant form of the condition, subjects taking an oral solution of 20 mg CBD per kilogram of body weight for 14 weeks, along with standard treatment, experienced a 42 percent reduction in drop seizures (the muscles go limp). Those taking a 10 mg CBD per kilogram of body weight saw a 37 percent decrease; patients who got a placebo saw a 17.2 percent decrease. The mechanism hasn’t quite been worked out yet, Dr. Devinsky says, though there’s some evidence that a receptor known as GPR55 may be critical for the anti-seizure effect.
In another, a specific combination of CBD and other secondary cannabinoids were found to work together to slow tumor grown in cases of colon cancer. These sorts of synergistic effects are fairly common in whole plant extracts, and aren’t unique to cannabis. However, the sheer volume of active compounds in cannabis extracts, and their wide-ranging effects certainly distinguish them from other plants.
Isolate CBD is the CBD gets its extraction from the cannabis plant without other terpenes and cannabinoids. Many users of this CBD type consider this much better than the full spectrum. They go as far enough to get this type of CBD by isolating the CBD from others themselves. They are even different dosage methods and levels for each kind of CBDs and therefore should carefully be in separation for each of the CBD types.
Tetrahydrocannabinol is the most abundant cannabinoid in most medical and recreational marijuana strains. However, in hemp THC is a minor constituent and appears only in trace amounts under 0.3% by dry weight, as required by the U.S. government for hemp products. THC mimics the action of anandamide, a neurotransmitter naturally produced in the human body, and binds to CB1 receptors in the endocannabinoid system found mostly in the brain. The extremely low levels of THC in hemp make hemp oil non-psychoactive and safe for all ages to use.
The same terms could be applied to what's actually in CBD products. While some do contain CBD, others (often marketed as "CBD-rich hemp oil") may have barely any, Asquith says. And depending on state laws, they can include varying levels of THC too – a combination shown to have some benefits, but also drawbacks, of course, if you're not looking for a high. "People will play all these games with the numbers because the consumers aren't really educated in this space yet and it's easy to get taken advantage of," he says. "It's the milligrams of the actual CBD molecule that matter."
CBD oil took the world by storm a few years ago when Dr. Sanjay Gupta investigated the cannabinoid’s ability to treat children with epilepsy. Initially, CBD oil was viewed as a medicine for the critically ill, but its appeal to the general public is surging. With few regulations, the CBD oil market is congested with questionable products. As a consumer of CBD oils, it is essential for you to know how they are made.
“Marijuana and industrial hemp are different varieties of the same plant species, Cannabis sativa L. Marijuana typically contains 3 to 15 percent THC on a dry-weight basis, while industrial hemp contains less than 1 percent (Blade, 1998; Vantreese, 1998). Most developed countries that permit hemp cultivation require use of varieties with less than 0.3 percent THC. However, the two varieties are indistinguishable by appearance. DeMeijer et al. (1992), in a study of 97 Cannabis strains, concluded that short of chemical analysis of the THC content, there was no way to distinguish between marijuana and hemp varieties.” http://www.ers.usda.gov/media/328202/ages001eb_1_.pdf
So Herrera, who's experienced her own share of pain due to a shoulder injury followed by a bout of Lyme disease, went to a local herb shop and bought a vial of the oil, which, by some definitions, is legal in all states if it doesn't contain more than 0.3 percent THC – the psychoactive component of cannabis. She began putting seven to nine drops under her tongue first thing most mornings – and was startled by the results. "It's changed my pain level, my anxiety level and my stress level," says Herrera, who already practiced yoga, meditated regularly, ate a healthy diet and tried conventional medical treatments for pain and mobility. "It was shocking," she says, because she thought her patients' reports were due to the placebo effect. "Right now," she adds, "I feel pretty amazing."
Cohen has found that chronic conditions including autoimmune diseases and pain syndromes can be helped with a 6-mg under-the-tongue tincture (the fastest delivery system) or a 25-mg capsule taken twice a day. Dosages for topical products like lotions are especially hard to determine—there’s no clarity on how much CBD gets into the system through the skin.
Answering the question “what is CBD oil” would be incomplete without mentioning the many CBD oil benefits. In addition to positively affecting the endocannabinoid system, CBD has been the focus of more than 23,000 published studies about cannabinoids in relation to various medical indications including anxiety, epilepsy, inflammation, cancer and chronic pain to name few. You can even find CBD for pets that is specially formulated to safely allow your pets to experience the natural benefits of CBD. For a more comprehensive look at these and other studies, visit our medical research and education page. Stay up-to-date on the latest developments in CBD and cannabis in our medical marijuana news section.