Home » THC and CBD – Two Cannabinoids Shaping the Future of Medicine


What’s the first thing that comes to your mind when you hear the word cannabis?

Let me guess.  It’s the plant that’s ripping the very fabric of our society apart, right? I don’t blame you. I used to think cannabis was a bad plant, too. But what if I tell you that instead of ripping our society apart, cannabis has the potential to help millions of people?

Cannabis, long used since ancient times, is known for its various medicinal benefits. Unfortunately, it’s also known for its psychoactive effects, which is one of the reasons why this plant was made illegal in the first place.

But not all parts of the plant are “bad” though. In fact, you’re about to find out how seriously good the cannabis plant is.

Let me tell you the story of two of the most-studied cannabinoids found in cannabis -tetrahydrocannabinol (THC) and cannabidiol (CBD).

THC – “The High Causer”

It was discovered that the primary cannabinoid that gives cannabis its psychoactive effects is THC.

But you would think that just because THC produce these effects, THC is only good for recreational purposes.  This couldn’t be further from the truth.  In fact, THC actually has a lot of medicinal benefits.

When THC stimulates the CB1 and CB2 receptors, it can produce widespread effects that have the potential to help treat various diseases and illnesses:

Activation of the CB1 receptors is what produces the psychoactive effects that THC is known for. When CB1 receptors are stimulated, they inhibit the primary inhibitory neurotransmitter[v] in the brain called GABA. With this inhibited, there will be an overall increased excitation of the neurons due to the higher excitatory neurotransmitters as well as activation of the reward circuitry of the brain which is what causes the “high.”

So how can people who don’t want to get high still get the best out of this medicinal plant?

Enter CBD.

The Powers of CBD

CBD is the non-psychoactive cannabinoid. It has many of the same medicinal benefits of THC, but it offers even more.  If THC stimulates CB1 receptors to do their magic, CBD influences the other receptors found in the cells to produce their widespread therapeutic effects.

Here, let me tell you how CBD can work its magic for a variety of disease. And mind you, these are just a few of the diseases that CBD can help! This is not an exhaustive list.

Anxiety and depression?  CBD stimulates the 5-HT1A serotonin receptors[vi] and the adenosine receptors[vii] to produce their calming effects.

Alzheimer’s disease? Two hallmark characteristics of Alzheimer’s disease are the formation of senile plaques due to Beta Amyloid and Tau protein hyperphosphorylation. CBD has the ability to control the formation of these senile plaques[viii] and inhibit hyperphosphorylation[ix].

Arthritis?  CBD can not only inhibit the inflammatory process[x] but it can also stimulate the TRPV1 receptors[xi]. When CBD binds to these receptors, desensitization to pain occurs faster, so there will be reduction of pain.

Cancer? CBD can induce apoptosis of cancer cells[xii]. It can prevent angiogenesis[xiii] or the formation of new blood vessels which supply the cancer growth, and it can inhibit cancer cell migration[xiv]. The best thing about CBD for cancer is that it only induces apoptosis of the abnormal cells[xv] and protects the healthy and non-transformed ones.

Crohn’s disease? CBD suppresses intestinal inflammation[xvi] and has the ability to reduce hypermotility[xvii] associated with this disease, so there is reduction in painful diarrhea.

Epilepsy, autism, and multiple sclerosis?  One of the mechanisms that worsen these conditions is neuroinflammation leading to excitotoxicity[xviii].  This results from too much glutamate in the brain, resulting in hyper excitation of the neurons and making them more permeable to calcium.  Now this is harmful because too high calcium levels inside the neuron will lead to mitochondrial damage[xix] and production of destructive enzymes and free radicals. These destructive enzymes will then leak into the synapses, damage the surrounding neurons, and worsen neuroinflammation.  What CBD does is to inhibit neuroinflammation[xx] by inducing apoptosis of immune cells and inhibiting the production of cytokines. With the inflammatory process under control, there will be reduction of excitotoxicity and protection of healthy cells.  CBD is also a very potent antioxidant[xxi] and can inhibit the effects of free radicals by preventing the process called oxidation which also worsens excitotoxicity.

These are just some of the effects of CBD on different diseases.

But is this all, you ask?


There are at least two more CBD effects worth mentioning.

Remember how our body produces its own cannabinoid-like compounds called endocannabinoids?  These are cannabinoids like anandamide and 2-Arachidonoylglycerol, and they bind to cannabinoid receptors to produce their therapeutic effects.  Unfortunately, they are easily broken down by enzymes, so their beneficial effects are very short-lived.

Now, CBD has the ability to enhance the level of anandamide[xxii] in the body by preventing fatty acid-binding proteins (FABPs) from transporting anandamide to the enzyme (fatty acid amide hydrolase) that degrades it.  With the FABPs inhibited, there will be more anandamide in the system.

And finally, CBD, together with THC[xxiii], can work wonders to help treat numerous diseases through what is known as the entourage effect[xxiv], or the synergistic interaction of the different compounds and terpenes found in cannabis working together to produce therapeutic effects.

But how can they work together when THC produces psychoactive effects?

This is quite interesting, you see, because CBD has numerous ways to counteract the psychoactive effects of THC.

CBD can modulate the body’s way of metabolizing and converting THC into its more potent metabolite by inhibiting cytochrome P450[xxv], a liver enzyme that breaks down drugs.

CBD is also a negative allosteric modulator of CB1 receptors[xxvi]. This means that CBD has the ability to bind with CB1, but not with its orthosteric or active site, and influence how the receptor transmits the signal created by THC.

Both THC and CBD can work together to enhance their therapeutic effects and even minimize the negative ones.  With these many therapeutic effects of cannabis, can you still honestly say that this plant is “bad” for humanity?


[i] Jaseena Elikottil, et al. November to December 2009.

The National Center for Biotechnology Information, The Analgesic Potential of Cannabinoids.


[ii] B. Wilsey, et al. December 11, 2012.

The National Center for Biotechnology Information, Low-dose vaporized cannabis significantly improves neuropathic pain.


[iii] Prakash Nagarkatti. October 2009.

The National Center for Biotechnology Information, Cannabinoids as novel anti-inflammatory drugs.


[iv] Pablo Roitman, June 17, 2014.

SpringerLink, Preliminary, Open-Label, Pilot Study of Add-On Oral Δ9-Tetrahydrocannabinol in Chronic Post-Traumatic Stress Disorder.


[v] Carl R. Lupica, et al. September 2004.

The National Center for Biotechnology Information, Marijuana and cannabinoid regulation of brain reward circuits.


[vi] Project CBD, How CBD Works.


[vii] Martin A. Lee. 2011.

Alchimia Web, CBD: How It Works.


[viii] Iuvone T., et al. 2009.

The National Center for Biotechnology Information, Cannabidiol: a promising drug for neurodegenerative disorders?


[ix] Ester Aso and Isidre Ferrer. March 5, 2014

The National Center for Biotechnology Information, Cannabinoids for treatment of Alzheimer’s disease: moving toward the clinic.


[x] Kozela E, et al. January 15, 2010.

The National Center for Biotechnology Information, Cannabinoids Delta(9)-tetrahydrocannabinol and cannabidiol differentially inhibit the lipopolysaccharide-activated NF-kappaB and interferon-beta/STAT proinflammatory pathways in BV-2 microglial cells.


[xi] Barbara Costa, et al. August 16, 2001.

The National Center for Biotechnology Information, Vanilloid TRPV1 receptor mediates the antihyperalgesic effect of the nonpsychoactive cannabinoid, cannabidiol, in a rat model of acute inflammation.


[xii] Ashutosh Shrivastava, et al. July 2011.

American Association for Cancer Research. Cannabidiol Induces Programmed Cell Death in Breast Cancer Cells by Coordinating the Cross-talk between Apoptosis and Autophagy.


[xiii] M Solinas, et al. November 2012.

The National Center for Biotechnology Information, Cannabidiol inhibits angiogenesis by multiple mechanisms.


[xiv] M Mimeault, et al. June 15, 2003.

The National Center for Biotechnology Information, Anti-proliferative and apoptotic effects of anandamide in human prostatic cancer cell lines: implication of epidermal growth factor receptor down-regulation and ceramide production.


[xv] Paolo Massi, et al. February 2013.

The National Center for Biotechnology Information, Cannabidiol as potential anticancer drug.


[xvi] Guiseppe Esposito, et al. July 20, 2012

Wiley Online Library, Cannabidiol in Inflammatory Bowel Diseases: A Brief Overview.


[xvii] R Capasso, et al. July 2008.

The National Center for Biotechnology Information, Cannabidiol, extracted from Cannabis sativa, selectively inhibits inflammatory hypermotility in mice


[xviii] Theoharis C Theoharides and Bodi Zhang.  November 30, 2011.

The National Center for Biotechnology Information, Neuro-inflammation, blood-brain barrier, seizures and autism.


[xix] Fulvio Celsi, et al. May 2009.

ScienceDirect, Mitochondria, calcium and cell death: A deadly triad in neurodegeneration.


[xx] Orrin Devinsky, et al. May 22, 2014.

The National Center for Biotechnology Information, Cannabidiol: Pharmacology and potential therapeutic role in epilepsy and other neuropsychiatric disorders.


[xxi] AJ Hampson, et al. July 7, 1998.

The National Center for Biotechnology Information, Cannabidiol and (−)Δ9-tetrahydrocannabinol are neuroprotective antioxidants.


[xxii] Matthew W. Elmes, et al. February 9, 2015.

The National Center for Biotechnology Information, Fatty Acid-binding Proteins (FABPs) Are Intracellular Carriers for Δ9-Tetrahydrocannabinol (THC) and Cannabidiol (CBD).


[xxiii] E. Russo, October 4, 2005.

The National Center for Biotechnology Information, A tale of two cannabinoids: the therapeutic rationale for combining tetrahydrocannabinol and cannabidiol.


[xxiv] Bailey Rahn. Leafly.  Cannabis’s Entourage Effect: Why Whole Plant Medicine Matters

[xxv] LM Bornheim and MP Grillo, October 1998. The National Center for Biotechnology Information, Characterization of cytochrome P450 3A inactivation by cannabidiol: possible involvement of cannabidiol-hydroxyquinone as a P450 inactivator.

 [xxvi] RB Laprairie, et al. October 12, 2015. The National Center for Biotechnology Information, Cannabidiol is a negative allosteric modulator of the cannabinoid CB1 receptor.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4621983/

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