CBD, short for cannabidiol, has been gaining tremendous popularity in recent years, both in scientific and consumer circles. For many, CBD has become part of their daily healthcare routine, but what is CBD and how does it work? The purpose of the following information is to further educate you on this naturally occurring chemical compound and provide guidance when choosing products based on your specific needs.
What is CBD?
CBD is one of the many (over 100 identified) cannabinoids found in the flowers, leaves and stems of the Cannabis plant. Also known as phytocannabinoids, these cannabinoids are a group of naturally occurring chemicals that act on specific receptors found in the Endocannabinoid system or ECS. The ECS is a recently discovered, specialized biological system that has been found in most animal species, including all vertebrates and some invertebrates and plays an invaluable role in promoting homeostasis, or inner balance. Studies have shown that based on its ability to act on this system, CBD has the potential to treat a variety of diseases and ailments with limited to no adverse side effects. CBD does not cause the intoxicating effects that are associated with another common cannabinoid, THC (Tetrahydrocannabinol).
Other important cannabinoids include CBG (Cannabigerol), CBC (Cannabichromene), and CBN (Cannabinol). These are just a few examples of the cannabinoids that the scientific community has identified. There may be more cannabinoids that have yet to be discovered. The following is a brief overview of some of the more common cannabinoids aside from CBD.
THC: THC is the cannabinoid that is responsible for creating the intoxicating effects, or the so called “high” sensation, commonly associated with marijuana. THC has been shown to help alleviate many symptoms associated with disease, including pain, nausea, and inappetence.
CBG: Although there is limited information on its effects in humans, results of animal studies suggest that CBG may be useful in treating inflammatory conditions such as inflammatory bowel disease and help slow the proliferation of cancer cells.
CBC: In animals, CBC has also shown promise in treating cancer. CBC may prove to be useful in treating pain and inflammation associated with osteoarthritis.
CBN: CBN is denatured THC. As with most cannabinoids, there are limited studies on the effects of CBN in people. CBN has been shown, however, to have antibacterial effects in laboratory studies. CBN may have potential in treating neuromuscular disorders like ALS, also known as Lou Gehrig’s disease. In combination with THC, it may provide a synergistic effect leading to increased levels of drowsiness, which could be useful in treating insomnia and other sleep disorders.
How does CBD work?
As mentioned above, CBD works on specific receptors (cannabinoid receptors) in the biological system known as the Endocannabinoid System or ECS. Most animal species, including many invertebrates, have some form of an ECS. In our explanation, we will limit our discussion to the human ECS.
Only recently discovered, the Endocannabinoid system is considered one of the most significant biological systems in the human body. Labeled as one of the most important discoveries of the late 20th century, scientists are still working to obtain a better understanding of how the ECS works. The ECS is a complex system composed of neurotransmitters known as endocannabinoids, cannabinoid receptors, transport proteins and receptor enzymes. Thought to play a major role in physiologic and cognitive functions, it has been described as "a bridge between the body and the mind."
- Temperature regulation
- Movement and coordination
- Sensory processing
- Immune system response
Endocannabinoids are the body’s naturally occurring cannabinoids, so named because of their similarity to the phytocannabinoids that are found in Cannabis. Two major endocannabinoids that have been identified include Anandamide (AEA) and 2-Arachidonoylglycerol (2-AG). Both AEA and 2-AG are produced on demand by the body and have distinct properties when acting on receptors in the Endocannabinoid system.
Derived from the Sanskrit word for joy, anandamide is commonly referred to as the "bliss molecule". Research has revealed its importance in regulating many physiological processes including feeding behavior, blood pressure, heart rate, reproduction and fertility. Studies in mice have shown AEA to play a major role in mediating "runners high", or the feeling of euphoria experienced during long distance running. AEA may also be useful in breast cancer research, as it inhibits breast cancer cell proliferation.
2-Arachidonoylglycerol , like anandamide, is thought to play a significant role in many physiologic processes. It is more prevalent in the CNS than AEA, and is considered to be an important messenger molecule in the brain. 2-AG is associated with modulating anxiety and depressive behaviors and reduces pro-inflammatory mediators in response to injury.
These endocannabinoids, along with cannabinoids found in cannabis, both act on cannabinoid receptors to promote homeostasis or internal stability, despite ever changing external conditions.
Preliminary research has identified two main cannabinoid receptors, CB1 and CB2 receptors, each of which have different distributions throughout the body. CB1 receptors are found primarily in the central nervous system (CNS), which is comprised of the brain and spinal cord, but can also be found in other organs including the liver, lungs and kidneys. CB2 receptors have also been identified in the CNS, but to a lesser degree than CB1 receptors. CB2 receptors are mainly found in the immune system and the hematopoietic system, which is responsible for the production of blood cells, including both red and white blood cells.
Endocannabinoid Transport Protein and Receptor Enzymes:
The last major players of the endocannabinoid system are endocannabinoid transport proteins (eCBTs) and endocannabinoid metabolic enzymes. Endocannabinoid transport proteins are responsible for carrying endocannabinoids and cannabinoids throughout our bodies to specific targets. Endocannabinoid metabolic enzymes are responsible for breaking down endocannabinoids once they have served their purpose. The two main enzymes identified include:
- fatty acid amide hydrolase, which degrades AEA
- monoacylglycerol acid lipase, which breaks down 2-AG
Much still remains unclear as to how these key players all work together to promote homeostasis, but it is known that the effects of each cannabinoid on the ECS depends upon which receptor the cannabinoid targets. This is an oversimplification of an incredibly complex system but can help explain why cannabinoids can have such varying effects on different parts of the body.
Where does CBD come from?
As mentioned above, CBD is found in many but not all parts of the Cannabis plant. It is found primarily in the flowers and to a lesser extent, the leaves and stalks. These plant structures are known as the aerial parts of the plant. The roots and seeds do not contain significant amounts of CBD, which makes it important for consumers to make sure of the CBD content within products they consume. Certain savvy marketers sell hemp oil or hemp seed oil under the pretense that these products contain CBD, when in fact they are derived from the parts of the cannabis plant that contain little to none, including the roots and the seeds.
There is much debate over the official classification of the genus Cannabis, which goes beyond the scope of this guide. One thought, however, is that there are three main species, Cannabis sativa L, Cannabis indica and Cannabis ruderalis. This classification is based on distinct identification characteristics, including place of origin, size of plant, leaf shape, and different flowering cycles. However, with increasing genetic variability, these distinctions are becoming less apparent.
The scientific classification of Cannabis has been under much debate and can be somewhat difficult to understand. To summarize, one popular opinion is that there is only one species of Cannabis, Cannabis sativa L., which has many different genetic variations. For simplification purposes, we will group these variants of Cannabis sativa L. into two groups: hemp and marijuana.
What is the difference between hemp and marijuana?
Hemp is not new to the United States of America. Several founding fathers, including George Washington, were hemp farmers. Later on in 1970, hemp was outlawed due to its association with marijuana and THC.
However, after the realization that hemp has many industrial benefits, and contains very little intoxicating THC, within the Agricultural Act of 2014, hemp was defined as varieties of Cannabis sativa and any part of such plant that contains 0.3% or less THC on a dry weight basis.
This created a broad legal definition of hemp resulting in the most important distinction between hemp and marijuana. The other defining characteristics associated with plant appearance have been blurred by artificial selection, making it difficult to differentiate the varieties by appearance alone. These days, marijuana and hemp can look remarkably similar.
The word “marijuana” and its origins
Presently, many people consider the word “marijuana” to be a controversial and racist term. It did not exist in American prior to 1910. “Marijuana” first arose during a time in America’s history when many Mexican immigrates were legally coming to the United States to escape civil war. The consumption of Cannabis can be traced back to America’s humble beginnings, but the idea of smoking cannabis was not commonplace. The idea was introduced into mainstream America with the arrival of the Mexican smoking culture. Over the next several decades, which spanned the Great Depression and periods of civil unrest, marijuana was demonized as a foreign corruptive substance associated with violence and crime. Based on this prejudice, cannabis was essentially made illegal for consumption by the Marijuana Tax Act of 1937. This history remains unbeknownst to most Americans today and “marijuana” is still a popular term used to describe Cannabis containing more than 0.3% THC. However, some people realizing the negative implications, have replaced the word “marijuana” with “cannabis”.
For the remainder of this introduction, we will use “high THC cannabis” when referring to marijuana.
Where did Cannabis come from?
It is believed that cannabis originated in central and southeast Asia thousands of years ago as the oldest know fiber cultivation crop. The first known record of cannabis being used for medicinal purposes was in China, as an anesthetic, dating back to 4000 BC. It was not introduced to the New World until the mid-1500s.
Cannabis did not make its way to North America until the early 1600s, when industrial hemp quickly became identified as a valuable crop. So much so, that in the 1700s, the federal government required hemp to be grown by American farmers.
In 1854, the U.S. Pharmacopeia recommended medicinal cannabis for treating many ailments, including pain and depression. Cannabis was widely used medicinally and for industrial purposes until the Marijuana Tax Act of 1937, imposing taxes on the sale of all derivatives of the plant.
Although still considered legal, this tax led to an overall decline in industrial hemp cultivation. Driven by decades of the criminalization and demonization of high THC cannibus, hemp became illegal in 1970, when the Controlled Substances Act classified all forms of cannabis, including industrial hemp, as an illegal Schedule I controlled drug.
However, this did not stop the scientific community from continuing to look to cannabis as a potential source for treating disease. Soon after cannabis was made illegal by the federal government in the U.S, a Brazilian scientist named Elisaldo Carlini began to conduct the first known studies looking specifically at CBD and its effects in humans. The results from Dr. Carlini's studies revealed that CBD had momentous potential in treating epilepsy and other seizure disorders. Fueled by these preliminary findings, many people began to view CBD as a potential treatment for refractory seizures.
This ultimately led to many people seeking out strains of cannabis that contained higher levels of CBD. In 2009, with the advent of Project CBD by a group of journalist dedicated to CBD and its potential therapeutic uses, CBD quickly gained the reputation as an alternative treatment modality for people with serious conditions that were not responding to available prescription medication.
One such person was Charlotte Fig, a 6 year old Colorado girl featured on CNN in 2013 for the use of CBD oil in the treatment of her epilepsy. Soon many people would follow suit, moving their families to states where medical cannabis was legalized in the hopes that CBD was the cure for their children's refractory seizures. It was this sudden increase in public demand that led to development of Epidiolex, the only FDA approved CBD product on the market for the use in treating two seizure disorders, Lennox-Gastaut and Dravet syndromes.
It wasn't long before everyone wanted access to CBD, still considered illegal by the Controlled Substance Act of 1970. Forty years would elapse before any change to hemp policy would be initiated by the federal government. This change was most likely driven by increased public interest in CBD and in 2014, the Farm Bill was passed. This bill accomplished two things regarding these policies. It made the distinction between hemp and high THC cannabis by defining hemp as containing 0.3% or less of THC. The bill also allowed for individual states to implement laws for research institutions and state agricultural agents to legally cultivate hemp in pilot agricultural programs.
Hemp was made legal by the 2018 Farm Bill Amendment, when hemp (containing 0.3% or less THC), along with any of its derivatives, was removed from the Controlled Substances Act. Much is still unclear and open for interpretation regarding hemp and hemp derived products. However, the passing of the 2018 Farm Bill helped spark further interest in hemp's potential uses and products, especially CBD oil.
What is the difference between CBD oil and hemp oil?
During recent years, CBD oil, hemp oil and hemp seed oil have become wildly popular to consumers and available through many mainstream retailers. Some people have the misconception that these different products are essentially the same thing. This can create uncertainty and confusion when choosing a product that is best suited for a person’s individual wants or needs.
As discussed earlier, hemp seeds contain only trace amounts of CBD, typically found in the seed’s outer coating or shell. Hemp seed oil is obtained via a process known as cold pressing, which is a mechanical form of extraction conducted at low temperatures. Due to the trace amounts of CBD in hemp seed, the resultant oil is not a significant source of CBD. It does contain many other beneficial ingredients like essential amino acids and Vitamin E, all of which are important in optimizing overall health.
Hemp oil is often used interchangeably with hemp seed oil. However, it can also be used as a blanket description for any oil that is extracted from any part of the hemp plant, whether it be from the seed, stalk, or flower. Location is key and depending on what parts of the plant are used during the extraction process, the resultant amount of detectable CBD will vary. Some products advertised as hemp oil may in fact contain little to no CBD.
CBD oil is produced by extracting CBD from the parts of the hemp plant that have higher concentrations of CBD, mainly the hemp flower. There are many different extractions methods that are currently being used to produce CBD oil, each has its own advantages and disadvantages. The two most common methods are solvent extraction and CO2 extraction.
How to use CBD?
Route of administration means the way in which a substance or drug is taken into the body. These routes include inhalation, oral, sublingual/transmucosal, and topical routes, just to name a few.
Inhalation: The advantages to inhaling a substance is that it has the shortest time to take effect, usually seconds to minutes. However, as we all know, smoking and vaping can be harmful to the lungs. In a society that is becoming more health conscious, inhalation is not considered an ideal way to consume CBD.
Oral: The oral route is one of the most common ways to introduce drugs or substances into our bodies. The disadvantage of consuming CBD by mouth is related to what is known as the first pass effect, also known as first pass metabolism. First pass metabolism refers to how both the digestive tract and the liver can reduce the bioavailability, or systemic absorption, of a substance.
Sublingual/transmucosal: One way to escape the first pass effect is to place an oral CBD product underneath the tongue or inside the cheek, for sublingual or transmucosal absorption. This allows CBD to be absorbed directly into the blood stream. However, to be effective, the product must be in contact with the tissue for a specific amount of time.
Topical: Another route of administration that is not affected by first pass metabolism are topical preparations. However, absorption is limited by the protective characteristics of the largest organ in the body, the skin.
Recent improvements in different drug delivery systems, including liposomal and nanoparticle technologies, have proven effective in increasing the bioavailability of many drugs. Both technologies essentially make it easier for CBD to be absorbed by the body no matter how it is used. These advancements can also improve how long CBD will continue to work once it is absorbed.
CBD can be found in many different preparations from oral tinctures to topical lotions. Your individual needs will influence which preparations you feel are best suited for you. Research has shown that oral and transmucosal preparations have a much higher effect on the body compared to topical products. However, topical CBD products may also provide benefits, especially when treating localized disease such as skin inflammation and localized pain.
How to choose a CBD Product?
Two important factors to consider when choosing a CBD product are the ingredients and product's formulation. We have recently discovered that while some CBD products claim to contain CBD, there is in fact little to no CBD present. In actuality, only a very small percentage of over the counter CBD products contain the amount of CBD that is on the label. The quality of the CBD can also vary. Internationally sourced CBD (sourced from outside the United States) can be less expensive but tends to be inferior in quality when compared to domestically sourced CBD.
Product formulation refers to how the composition of a product will influence the delivery of an active ingredient, CBD in this case, in a stable and usable form. This formulation will also determine whether a CBD product provides full spectrum, broad spectrum or isolate forms of CBD.
What does full spectrum, broad spectrum and CBD isolate mean?
Full spectrum CBD products include all the cannabinoids that are found in the cannabis plant, including THC. THC has been proven to have therapeutic effects and studies have shown that both THC and CBD work better when used together which is known as the entourage effect (discussed below.) This also pertains to the other cannabinoids, flavonoids and terpenes that are naturally occurring in the cannabis plant. For a full spectrum product to be considered legal, the THC component must be 0.3% or less.
Broad spectrum CBD refers to CBD products that include the same components as a full spectrum formulation, but with no THC. This may be more appealing to people who are concerned about the intoxicating effects of THC and for use in pediatric and veterinary medicine.
With CBD isolates, no other cannabinoids, flavonoids or terpenes are extracted with the CBD thus prohibiting the entourage effect.
What is the Entourage Effect?
CBD is only one of many beneficial cannabinoids that are associated with the cannabis plant. Aside from cannabinoids, other important compounds that can be found are flavonoids and terpenes. Flavonoids are what give plants their color and terpenes are associated with a plant’s odor. Along with cannabinoids, flavonoids and terpenes provide natural protection for the plant, and offer potential health benefits for humans. Research has shown that the efficacy of CBD is increased when combined with other cannabinoids, flavonoids and terpenes. This is known as the Entourage Effect. The entourage effect is the mechanism when all the components found in cannabis have a greater beneficial, synergistic effect when taken together compared to when each individual component is used on its own.
Will CBD get me "high"?
Although CBD has been shown to have mind altering effects in terms of reducing anxiety and potentially elevating mood, it does not cause the intoxicating effects ("high") associated with THC. The reason being THC and CBD act on the Endocannabinoid system (ECS) in completely different ways. THC directly binds to CB1 and CB2 receptors and exhibits most of its intoxicating effects by binding directly to CB1 receptors found in the brain. CBD has a lower affinity for these receptors and is thought to work more indirectly by modifying the receptor’s binding ability for other cannabinoids and by influencing additional molecular pathways in the ECS. Some of these pathways include:
- Dopamine D2 receptor binding: Crucial in regulating behavior and cognition
- 5-ht1A Activation: Wide variety of potential benefits, including increased mental stability, fatigue reduction, and decreased pain perception.
- Adenosine Enhancement: Important in reducing inflammation and potential for treating autoimmune disorders.
- TRPV1 Activation: Role in regulation body temperature, pain and inflammation.
- Glycine Receptor Potentiation: Discovered to play a major role in pain proprioception.
Based on how THC and CBD act on the ECS explains why each cannabinoid has varied effects in the body. CBD has been shown to have many beneficial effects without the intoxicating effects of THC due to its specific behavior in the Endocannabinoid system.
How will CBD Affect Me?
CBD affects the body through a complex biological system called the Endocannabinoid system (ECS). As previously discussed, most animal species, with exceptions including insects and protozoa, have some form of an ECS. However, the composition and distribution of the ECS across these animal species can be quite different. For example, dogs have a higher distribution of CB1 receptors in certain parts of the brain compared to humans. As we discussed earlier, THC acts on CB1 receptors to produce the intoxicating effects seen with high THC cannabis. The higher concentration of CB1 receptors in the canine brain explains why dogs appear to be more sensitive to these effects than humans.
Interspecies differences explain why cannabinoids can affect animals differently, but why can the effects of CBD be so varied between individuals? Not only can there be inherit differences between peoples’ Endocannabinoid Systems, but factors like genetics, gender, age and overall health can influence how one will be affected by CBD.
Quality of CBD, dosage and frequency can also contribute to how CBD may affect certain individuals. It is our recommendation to be familiar with what products you are using, and consistency is key. In many cases, the full effects of CBD are not felt for 4-6 weeks after starting.
CBD is considered to be generally safe with few to no side effects, however, there is no published recommended dose for CBD. When consuming a new CBD product, it is advised to start with a low dose and slowly increase to effect. It is especially important to take note of any subtle changes you may experience during this process and some people may document these changes to help obtain the ideal dose. It is important to remember what might work for some, may not work for others. When in doubt, "start low and go slow".
As with any dietary supplement, people who are pregnant, nursing, taking medication or have underlying health conditions should consult their physician prior to starting a CBD regiment.
Is CBD Legal?
In short, yes and no. With the passing of the 2018 Farm Bill, hemp (cannabis that contains 0.03% or less THC) along with its derivatives, was removed from the Controlled Substance act, making it federally legal. However, each individual state acts independently in how they regulate and handle hemp and CBD. For example, Idaho considers all forms of cannabis, including CBD to be illegal despite federal status. On the other side of the country, in New Jersey, CBD is legal and has no restrictions. To make matters more complicated, according to the FDA, it is currently illegal to market CBD as a dietary supplement or food additive. There is only one FDA approved CBD drug currently on the market, Epidiolex, labeled safe and effective in the treatment of two seizure disorders. This means that currently it is prohibited by the FDA to make claims regarding CBD and its use in the treatment of specific conditions. To maintain compliance with the FDA, we do not make such claims regarding our products. We do acknowledge, based on research and clinical studies, CBD’s tremendous potential in the treatment of many diseases and in promoting inner balance in the face of ever-changing external stressors.
The subject surrounding the legality of CBD is confusing and ill-defined. Although federally legal, there may be state implemented restrictions regarding hemp and CBD products. Whenever in doubt, we recommend checking your individual state's policies regarding CBD.
Can I Give my Pet CBD?
More research is needed to explore the use of CBD as a treatment modality for pets, but scientist agree that it may be useful in treating disease states common amongst animals and people. These conditions include:
- Chronic pain
- Neuropathic pain
- Gastrointestinal disorders
The Future of CBD
It is an understatement to say that CBD has taken the world by storm. Not only is the medical community looking to CBD for treating many disorders and diseases, it has been popularized as the new “it” product by present culture. From drink additives to face cream, the possibilities for CBD use seem limitless. On the other hand, the current landscape surrounding CBD looks quite different from what activists and scientists expected. The federal government’s vague stance on CBD has created many problems that currently face the industry. Presently, it is considered to be the "wild west" in terms of CBD and CBD products. Much clarity is needed to insure everyone can benefit from safe, effective, and consistent products. It is Royal Leaf's mission to accomplish such standards, even before FDA regulations take effect.
Although the future of CBD may not be completely clear, one thing is for certain, CBD is not going away anytime soon. We are excited by CBD's tremendous potential and look forward to continuing our mission in providing the highest quality CBD products.