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Unless you work in the cannabis industry, “cannabinoid” probably isn’t a word that you hear every day. But, what is a cannabinoid, anyway? Simply stated, a cannabinoid is a member of a special class of chemical compounds called cannabinoids. These compounds were named after the cannabis plant—they’re chemicals that have effects that are cannabis-like, and they have special physiological roles in the human body.
A cannabinoid is a chemical that belongs to a unique class of chemical compounds named after the cannabis plant. The structure of the first cannabinoid was isolated in 1964, by Israeli chemists researching the cannabis plant. In the years since, over 113 similar structures were identified in Cannabis.
Cannabinoids interact with specialized cell receptors in the human body, called cannabinoid receptors. A cell receptor is a specialized landing site that sits on the surface of cells, awaiting activation from chemical messengers.
The discovery of cannabinoids and their respective cannabinoid receptors enabled scientists to understand why cannabis produces a psychoactive effect. As it turns out, the cannabinoids found in the cannabis plant mimic molecules that are naturally produced by the human body. These latter molecules are called endocannabinoids.
Cannabinoids may be named after the cannabis plant, but the plant certainly isn’t the only source of these unique molecules. Three distinct types of cannabinoids exist: plant-based, animal-based, and man-made. Here’s a summary of the key differences:
Phytocannabinoids are cannabinoids found in plants. The prefix phyto- means “plant.”
Thus far, only the cannabis plant is thought to produce phytocannabinoids. And the plant produces a lot of them, too—over 100, in fact.
Many of these compounds engage either directly or indirectly with cannabinoid receptors, inspiring chemical reactions within cells. The overall effects of these chemical reactions vary–researchers are still exploring the effects of cannabinoids on the human body.
But, the most remarkable effect is intoxication. Marijuana produces its psychoactive effects via specialized cell receptors called cannabinoid receptors.
The infamous tetrahydrocannabinol (THC) causes a “high” because it binds with cannabinoid receptors in the brain (CB1 receptors). THC is the primary intoxicant in the cannabis plant. It is also a cannabinoid.
Endocannabinoids are the cannabinoids that the body produces naturally. The prefix endo- refers to “endogenous”, meaning “from within.” The human body produces two primary endocannabinoids:
If cannabinoid receptors are like locks, endocannabinoids are like keys. Endocannabinoids, along with cannabinoid receptors and specific enzyme proteins, make up a larger endocannabinoid system.
The molecules engage with cannabinoid receptors to regulate a range of bodily activities. All vertebrates have an endocannabinoid system.
Not all cannabinoids are natural. Synthetic cannabinoids are used to make pharmaceutical drugs and used in scientific research. The most well-known synthetic cannabinoid is dronabinol, which is sold under the brand name Marinol.
Marinol is sometimes prescribed to cancer patients to relieve nausea and vomiting associated with chemotherapy. It’s also sometimes prescribed to AIDS patients to increase appetite.
There are many other synthetic cannabinoids, although they’re often limited to laboratory research. Scientists use synthetic cannabinoids to study the endocannabinoid system.
Have you ever read the label on a package of cannabis? When you purchase cannabis from a dispensary or medical retailer, there are two initialisms that are important to understand: THC and CBD.
THC and CBD are the two most common cannabinoids in the cannabis plant. Most marijuana products available on the commercial market are either dominant in THC, CBD, or contain a mixture of both. Here’s the difference:
THC is the abbreviation for Delta(9)-tetrahydrocannabinol. As most cannabis lovers probably know, THC is the primary psychoactive compound in marijuana. It’s what creates the “high” feeling after you smoke or ingest activated cannabis.
But, this chemical compound does a lot more than simply cause intoxication. THC is currently being explored for its potential in:
Although, it is important to note that THC has not been medically approved for the treatment of any specific medical conditions.
CBD, short for cannabidiol, is the second most abundant cannabinoid. Like THC, the list of medical benefits of this cannabinoid just keeps getting longer. Unlike THC, CBD is non-intoxicating.
CBD is currently being explored for its potential in:
It’s also now legal in more states than its more controversial counterpart.
The secondary cannabinoids in cannabis are called secondary for a reason—they are only present in the cannabis plant in very small concentrations. While these minor cannabinoids may contribute to a synergistic effect with primary cannabinoids, their individual benefits may be too small to rely upon.
Plus, there’s another problem with research on secondary cannabinoids—there’s very little of it.
Most studies in minor cannabinoids are still in the preclinical phase, which means that their effects haven’t been tested on humans. Instead, scientists use cell cultures and animal models in order to test the health effects of cannabinoids. Testing cannabis medicines on rodents or a few cells is a far cry from quality research with human patients.
Nonetheless, secondary cannabinoids boast some unique and interesting properties. If you’re hoping to learn more about what chemicals are in your cannabis, here’s the scoop on the most common secondary cannabinoids:
Also known as Cannabichromene, CBC is the third most common cannabinoid in the marijuana plant overall. In some cultivars, CBC may even take dominance over CBD. Although, CBC is still considered a minor cannabinoid. Like CBD, cannabichromene is non-intoxicating.
CBC is currently being explored for its potential in:
Thus far, however, research on CBC is in its infancy. Most studies on the cannabinoid rely heavily on animal and laboratory models, not human patients. At this time, CBC has not been medically approved for the treatment of any specific medical conditions.
Cannabinol (CBN) is a breakdown product of THC. As your dried cannabis flower ages, more THC converts to CBN. Most aged cannabis flowers and products contain small amounts of CBN. The longer the product has been dried and cured, the more CBN it will produce.
CBN is currently being explored for its potential in:
It’s often misreported that CBN has potent sedative effects. While there is some minor evidence that suggests that CBN may enhance drowsiness when combined with THC, the overall findings are relatively weak.
CBG is short for cannabigerol. This cannabinoid is found early in the growth cycle of the cannabis plant, which makes it somewhat difficult to find in large quantities. CBG, however, is non-intoxicating, meaning that it won’t cause a notable “high.”
CBG is currently being explored for its potential in:
CBG also boasts antioxidant potential, perhaps making it useful for combating stress-related damage.
Short for tetrahydrocannabivarin, THCv is another cannabinoid that works in tandem with THC. Some studies cite that THCv has about 20 percent the psychoactive capacity as THC, but recent research has shown that THCV actually mitigates some of the negative psychoactive impacts of THC.
THCv is currently being explored for its therapeutic potential in:
CBDv is short for cannabidivarin. So far, not a whole lot of research has been done on CBDV. CBDv is an analog of CBD, meaning that it is similar to CBD but features a slightly different structure.
CBDv is currently being explored for its potential in:
Of course, research on CBDv is still in its early stages.
The THC that many of us have come to know and love is known as Delta(9)-THC. Delta(8)-THC is slightly different. In adults, the molecule is less psychoactive than “regular” THC. It’s also far less common—on the cannabis plant, Delta(8)-THC is only found in small concentrations.
Delta(8)-THC is currently being explored for its potential in:
THC acid (THCa) and CBD acid (CBDa) are the compounds found it marijuana before it is decarboxylated, or “decarbed”. These cannabinoids are found in raw cannabis, and can be eaten as a nutritional supplement or applied topically.
Decarboxylation happens when these delicate acids are exposed to heat. Once heated, the structure of the acids change and the molecules transform into different active compounds.
Therefore, you cannot smoke or inhale THCa or CBDa.
Once you take heat to these two acids, you convert them into their activated form. Heat breaks down THCa into psychoactive THC. THCa on is not psychoactive until you apply heat. CBDa degrades into CBD.
THCa is a non-intoxicating raw cannabinoid. The molecule is the precursor to THC, and is found only on raw and unheated cannabis plants.
CBDa is a non-intoxicating raw cannabinoid. The molecule is the precursor to CBD, and is found only on raw or unheated cannabis plants.
CBDa is currently being explored for its potential in:
Cannabinoid acids like THCa and CBDa are most often consumed as dietary cannabinoids. Many cannabis consumers make juices, smoothies, and raw cannabis tinctures in order to enjoy raw cannabinoids.
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