Adenosine 2A receptor: Administration of CBD is thought to act upon the adenosine 2A receptor site, possibly contributing to its anxiolytic and anti-inflammatory effects. Adenosine receptors are known to influence cardiovascular processes (cardiac rhythm, circulation), immune function, sleep, pain regulation, and blood flow. The adenosine 2A receptor interacts with G proteins to alter cAMP (cyclic adenosine monophosphate). Dysfunction of the adenosine 2A receptor may disrupt neurotransmission of glutamate and dopamine, and simultaneously cause inflammation, neurodegeneration, and possibly anxiety.
CBD = cannabidiol; HV = healthy controls; DBP = double-blind placebo; SAD = social anxiety disorder; HC = healthy controls; SPECT = single-photo emission computed tomography; rCBF = regional cerebral blood flow; fMRI = functional magnetic resonance imaging; HPC = hippocampus; HYP = hypothalamus; PHG = parahippocampal gyrus; STG = superior temporal gyrus; MTG = medial temporal gyrus; ACC = anterior cingulate cortex; PCC = posterior cingulate cortex
Crippa et al. (2011) published a study investigating the effects of CBD on neural activation among those with social anxiety disorders. For the study, researchers recruited 10 treatment-naïve patients with social anxiety disorders. To determine how CBD influenced neural activity, they utilized functional neuroimaging to assess regional cerebral blood flow at rest with a SPECT scan incorporating an L-ethylcysteinate dimer (ECD) tracer.
Regardless of how CBD oil induces hippocampal neurogenesis, the growth of new brain cells may be enough to decrease anxiety. A report published in 2015 documented that increasing adult neurogenesis (regardless of the modality) is sufficient enough to decrease anxiety. Therefore, it could be that CBD is an effective anxiolytic predominantly through mechanisms implicated in neurogenesis.
The ratio of THC to CBD in a product is also important. Lee said products made with CBD oil extracted from resin-rich marijuana plants rather than industrial hemp, which may have no THC at all, are more therapeutic because the two ingredients work synergistically. These oils are also purer, since fewer plants are used and less refining is necessary. However, these products are available only in states with legal weed.
“DEA will continue to support sound and scientific research that promotes legitimate therapeutic uses for FDA-approved constituent components of cannabis, consistent with federal law,” acting DEA administrator Uttam Dhillon said in a press release. “DEA is committed to continuing to work with our federal partners to seek ways to make the process for research more efficient and effective.”
Guzmán leads me around his cramped lab—centrifuges, microscopes, beakers, petri dishes, a postdoc researcher in a white smock extracting tissue from a mouse corpse pinned under bright lights. It’s your typical bioresearch lab, except that everything is devoted to the effects of cannabis on the body and brain. The lab focuses not just on cancer but also on neurodegenerative diseases and on how cannabinoids affect early brain development. On this last topic the Guzmán group’s research is unequivocal: Mice born of mothers regularly given high doses of THC during pregnancy show pronounced problems. They’re uncoordinated, have difficulty with social interactions, and have a low anxiety threshold—they’re often paralyzed with fear at stimuli, such as a cat puppet placed near their cage, that don’t upset other juvenile mice.
Numerous diseases — such as anorexia, emesis, pain, inflammation, multiple sclerosis, neurodegenerative disorders, epilepsy, glaucoma, osteoporosis, schizophrenia, cardiovascular disorders, cancer, obesity and metabolic syndrome-related disorders — are being treated or have the potential to be treated by cannabis oils and other cannabinoid compounds.
AZ, JH, FG, and JC are co-inventors (Mechoulam R, JC, FG, AZ, JH, and Breuer A) of the patent “Fluorinated CBD compounds, compositions and uses thereof. Pub. No.: WO/2014/108899. International Application No.: PCT/IL2014/050023” Def. US no. Reg. 62193296; 29/07/2015; INPI on 19/08/2015 (BR1120150164927). The University of São Paulo has licensed the patent to Phytecs Pharm (USP Resolution No. 15.1.130002.1.1). The University of São Paulo has an agreement with Prati-Donaduzzi (Toledo, Brazil) to “develop a pharmaceutical product containing synthetic cannabidiol and prove its safety and therapeutic efficacy in the treatment of epilepsy, schizophrenia, Parkinson’s disease, and anxiety disorders.” JH and JC have received travel support from and are medical advisors of BSPG-Pharm. AZ is medical advisor of BSPG-Pharm. The other authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
What is the cost? If the CBD oil is cheap, it probably means that the hemp used is low grade. Hemp is a “bio-accumulator,” meaning it can easily suck up toxins from soil. Price will often tell you a lot about the product you are purchasing, as legitimate companies are forced to charge higher prices in order to maintain a growing standard that does not lower the quality of the oil.
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.
Landis expects prices to come down 10 to 20 percent over the next few years. The biggest reason is that hemp cultivation is likely to dramatically increase. Senate Majority Leader Mitch McConnell is among the farm-state legislators who are pushing for hemp to be legalized at the federal level. McConnell’s state, Kentucky, is already one of the leading hemp producers. CBD manufacturers’ raw material expenses will drop significantly once enough farmers figure out how to profitably grow hemp, says PurePower CEO McLaughlin.
Side effects: There appear to be no significant unwanted side effects associated with CBD compared to a placebo. Many anxiolytics carry severe side effects such as: brain fog, drowsiness, inability to retrieve memories, impaired learning, sexual dysfunction, etc. Individuals taking CBD are unlikely to experience severe unwanted side effects. (Read more: “CBD side effects“).
Early research shows promising signs that a product made from cannabis known as cannabidiol (CBD) oil may help relieve anxiety. CBD is a type of cannabinoid, a chemical found naturally in marijuana and hemp plants. Unlike tetrahydrocannabinol (THC), another type of cannabinoid, CBD doesn’t cause any feelings of intoxication or the “high” you may associate with cannabis. Learn more about the potential benefits of CBD oil for anxiety, and whether it could be a treatment option for you.
Figuring out how much CBD oil to take can feel like trying to navigate through a complicated maze. The sheer volume of CBD brands on the market can create confusion for consumers, and when you take a closer look, it’s not difficult to understand why. Not only do vendors use different source materials (CBD-rich cannabis vs. industrial hemp, different strains, etc.), but they also implement different extraction techniques .
The World Health Organization takes a similar stance, saying there is no evidence of abuse potential or harm associated with the use of pure CBD. However, WHO cautions against its use as a medicine until further research and evidence have been amassed. And, of course, it’s always best to talk with your doctor before making any changes to your health routine.
CBD products that don't contain THC fall outside the scope of the U.S. Drug Enforcement Agency's (DEA) Controlled Substances Act, which means CBD products are legal to sell and consume as long as they don't have THC. That's likely one of the reasons why CBD products, including CBD oil, are becoming more socially acceptable and increasingly popular. In 2016, Forbes reported that CBD products are expected to be a $2.2 billion industry by 2020.
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