Currently, the most talked about natural ingredient in the dietary supplement industry is probably CBD. It’s also the ingredient about which the most misinformation is being disseminated. One YouTube video may say it’s the cure for all ills, while another website may say that it’s not safe, and might even make you high. It really is a travesty that there is so much hype and unreliable personal opinion being expressed about CBD. In an effort to provide some clarity, this article will share science-based information about hemp, CBD and phytocannabinoids.
Cannabidiol, or CBD, is a naturally-occurring compound found in plants. It belongs to a family of compounds called cannabinoids or, more specifically, phytocannabinoids — which means cannabinoids from plants (phyto = plant). Actually, there are over 100 different phytocannabinoids, and hemp provides a primary source. Other common plants, such as oregano and basil, also contain phytocannabinoids. It may be that, when you eat Italian foods, one of the reasons you may enjoy them so much (besides the delicious taste), is that the phytocannabinoids they contain help you feel good.
The most well-known of the phytocannabinoids, aside from CBD, is tetrahydrocannabinol, or THC. THC is the psychoactive compound found in marijuana that makes you high. To be clear, CBD and the other phytocannabinoids are not psychoactive, and will not make you high. They have other benefits, but they are not psychoactive.
While CBD is the most prevalent phytocannabinoid in hemp, it isn’t the only one. In fact, cannabinoids work together to create a greater overall synergistic activity. In scientific literature, the name for this is “the entourage effect.” This is similar to the way that various vitamins and minerals work together synergistically. If you’re just using isolated CBD, you’re not getting the benefits of the entourage effect.
A full-spectrum hemp extract, on the other hand, provides a full array of naturally-occurring phytocannabinoids, including a defined amount of CBD. That’s what you want: full-spectrum phytocannabinoids, not CBD isolate. It should also be noted that CBD isolate is less expensive than full-spectrum, as well as less effective.
The Endocannabinoid System
While most people can probably name a couple of body systems, like the immune and cardiovascular systems which consist of defined organs and other structures, the vast majority of people are unaware of the endocannabinoid system (ECS). The ECS is a different type of system, composed of a series of receptors which occur throughout the nervous system and, consequently, throughout every system in the body. The ECS plays a major role in regulating many physical and cognitive processes in the body.
In addition, the body produces endocannabinoids, which are its own internal cannabinoids. These activate the ECS receptors to initiate a cascade of powerful and important effects. Likewise, phytocannabinoids work with endocannabinoids to support and provide healthy functioning of the ECS. Just as every other system in the body needs nutritional support to stay healthy, the ECS needs such support as well. Supplementation with phytocannabinoids can help in the nourishment of the ECS.
Research On CBD/Phytocannabinoids
Regarding the benefits of cannabinoids let me start by saying that most CBD research is actually done on full-spectrum phytocannabinoids with a defined amount of CBD, not CBD isolate. So, that’s what I’m going to talk about. CBD/ phytocannabinoid research had been done on a broad range of health issues, with significant variations in dosage. In this article, we’ll focus on a few primary benefits associated with specific amounts of phytocannabinoids.
Relaxation And Sleep
Americans have a serious need to relax. Almost one-third of adults report that stress has a strong impact on their physical and mental health — and 42 percent of those report feeling nervous or anxious. In addition, about 46 percent of adults surveyed have reported lying awake at night due to stress. Essentially, stress just keeps their mind going and going, making it difficult to shut down for the night. Since the ECS plays an important role in the regulation and maintenance of all body systems, and phytocannabinoids support the ECS, it’s not surprising to learn that in human clinical research, 25 mg of phytocannabinoids daily have been shown to help calm stress and stress-induced anxiety, as well as help improve sleep.
A large, retrospective series of case studies1 was conducted in which the vast majority of 103 adult subjects with stress/anxiety and sleep complaints were given 25 mg phytocannabinoids per day in capsule form. If stress/anxiety complaints predominated the 25 mg dose was given in the morning after breakfast. If sleep complaints predominated, the dose was given in the evening after dinner. The results were that, on average, stress/anxiety and sleep improved for the majority of patients and these improvements were sustained over time. At the first monthly assessment following the start of phytocannabinoid supplementation, 79.2 percent and 66.7 percent of subjects experienced an improvement in stress/anxiety and sleep, respectively.
Other published case studies found similar results when phytocannabinoids were supplemented. In a case study2 with a young girl with stress/anxiety, 25 mg of phytocannabinoids at bedtime resulted in a steady improvement in the quality and quantity of her sleep. Likewise, in a case study3 with a 27-year old man who had stress/anxiety and sleep issues, the subject reported that 24 mg of phytocannabinoids daily resulted in improvements in stress/anxiety as well as settling into a regular pattern of sleep.
There are other studies in a variety of populations4,5,6,7,8,9,10,11 in which phytocannabinoids have been successfully used at higher doses for stress/anxiety and sleep, but no studies in which phytocannabinoids have been used in lower doses.
An emerging area of phytocannabinoid research is inflammation and pain. Now before exploring the data, keep in mind that inflammation commonly occurs in a non-disease state. Inflammation occurs in everyone, every day. Higher intakes of red and processed meats, sweets, desserts, French fries, and refined grains are associated with experiencing more inflammation.12 Colder temperatures are associated with experiencing more inflammation.13 Physical overexertion — like exercising extra hard at the gym — may result in temporary inflammation and pain.14,15 So, when talking about pain and inflammation, these are the type of applications we're considering. Now, onto a review of phytocannabinoid research on inflammation and pain.
In research, there are various markers of inflammation. That is, there are inflammatory chemicals produced by our cells which contribute to the inflammatory process, and which can be measured. In one laboratory study,16 researchers sought to quantify the anti-inflammatory effects of cannabinoids, including phytocannabinoids, in cells that produced inflammatory markers. The results were that the cannabinoids successfully reduced inflammatory markers. Similar results were seen in other laboratory research with cannabinoids/phytocannabinoids and inflammation.17,18,19 Other laboratory research suggests that phytocannabinoids may also have application for pain.20,21
In addition to laboratory research, there is also human research in which various doses of phytocannabinoids have been used in different inflammation/pain situations. In double-blind, placebo-controlled research with 62 subjects, supplementation with 200 mg/day phytocannabinoids significantly reduced levels of resistin, a type of protein that promotes several proinflammatory cytokines.22 In other human research,23 50-100 mg/day of phytocannabinoids resulted in pain reduction in most subjects tested.
Furthermore, 2,409 phytocannabinoid users were recently surveyed regarding why they used phytocannabinoids. The results, published in a scientific journal,24 were that almost 62 percent of the phytocannabinoid used reported using phytocannabinoids for specific health applications. The top three were pain, anxiety, and mood. Almost 36 percent of respondents reported that phytocannabinoids effectively addressed their issue(s) "very well by itself," while only 4.3 percent reported "not very well." Of course, this survey in and of itself does not constitute direct evidence of the effectiveness of phytocannabinoids of temporary pain applications, but when taken together with the other research cited it certainly provides interesting insights into the popular use of phytocannabinoids.
Much of the aforementioned research was conducted using a daily dose of 25 mg of phytocannabinoids. Nevertheless, you may find products on the market that contain 10 mg or even 5 mg of CBD/phytocannabinoids. Many people have asked me if these lower doses will do them any good. My answer is maybe, but since there's no research showing that doses lower than 25 mg have efficacy, I would recommend sticking with 25 mg dose for a greater likelihood of success.
- Shannon S, Lewis N, Lee H, Hughes S. Cannabidiol (CBD) in Anxiety and Sleep: A large case series. Unpublished. n.d. 10 pgs.
- Shannon S, Opila-Lehman J. Effectiveness of Cannabidiol Oil for Pediatric Anxiety and Insomnia as Part of Posttraumatic Stress Disorder: A Case Report. Perm J. 2016 Fall;20(4):108-11.
- Shannon S, Opila-Lehman J. Cannabidiol Oil for Decreasing Addictive Use of Marijuana: A Case Report. Integrative Medicine. 2015;14(6):31-5.
- Fusar-Poli P, Allen P, Bhattacharyya S, Crippa JA, Mechelli A, Borgwardt S, Martin-Santos R, Seal ML, O'Carrol C, Atakan Z, Zuardi AW, McGuire P. Modulation of effective connectivity during emotional processing by Delta 9-tetrahydrocannabinol and cannabidiol. Int J Neuropsychopharmacol. 2010 May;13(4):421-32.
- Crippa JA, Derenusson GN, Ferrari TB, Wichert-Ana L, Duran FL, Martin-Santos R, Simoes MV, Bhattacharyya S, Fusar-Poli P, Atakan Z, Santos Filho A, Freitas-Ferrari MC, McGuire PK, Zuardi AW, Busatto GF, Hallak JE. Neural basis of anxiolytic effects of cannabidiol (CBD) in generalized social anxiety disorder: a preliminary report. J Psychopharmacol. 2011 Jan;25(1):121-30.
- Bergamaschi MM, Queiroz RH, Chagas MH, de Oliveira DC, De Martinis BS, Kapczinski F, Quevedo J, Roesler R, Schroder N, Nardi AE, Martin-Santos R, Hallak JE, Zuardi AW, Crippa JA. Cannabidiol reduces the anxiety induced by simulated public speaking in treatment-naive social phobia patients. Neuropsychopharmacology. 2011 May;36(6):1219-26.
- Das RK, Kamboj SK, Ramadas M, Yogan K, Gupta V, Redman E, Curran HV, Morgan CJ. Cannabidiol enhances consolidation of explicit fear extinction in humans. Psychopharmacology (Berl). 2013 Apr;226(4):781-92.
- Carlini EA, Cunha JM. Hypnotic and antiepileptic effects of cannabidiol. J Clin Pharmacol. 1981 Aug-Sep;21(S1):417S-27S.
- Zuardi AW, Crippa JA, Hallak JE et al. Cannabidiol for the treatment of psychosis in Parkinson's disease. J Psychopharmacol, 2009;23(8):979.83.
- Chagas MH, Eckeli AL, Zuardi AW, Pena-Pereira MA, Sobreira-Neto MA, Sobreira ET, Camilo MR, Bergamaschi MM, Schenck CH, Hallak JE, Tumas V, Crippa JA. Cannabidiol can improve complex sleep-related behaviours associated with rapid eye movement sleep behaviour disorder in Parkinson's disease patients: a case series. J Clin Pharm Ther. 2014 Oct;39(5):564.6.
- Pesantez-Rios G, Armijos-Acurio L, Jimbo-Sotomayor R, Pascual-Pascual SI, Pesantez-Cuesta G. [Cannabidiol: its use in refractory epilepsies]. Rev Neurol. 2017 Aug 16;65(4):157.60. [Article in Spanish]
- Lopez-Garcia E, Schulze MB, Fung TT, Meigs JB, Rifai N, Manson JE, Hu FB. Major dietary patterns are related to plasma concentrations of markers of inflammation and endothelial dysfunction. Am J Clin Nutr. 2004 Oct;80(4):1029.35.
- Halonen JI, Zanobetti A, Sparrow D, Vokonas PS, Schwartz J. Associations between outdoor temperature and markers of inflammation: a cohort study. Environ Health.2010 Jul 23;9:42.
- Suzuki K, Peake J, Nosaka K, et al. Changes in markers of muscle damage, inflammation and HSP70 after an Ironman Triathlon race. Eur J Appl Physiol. 2006 Dec;98(6):525.34.
- Rowlands DS, Pearce E, Aboud A, et al. Oxidative stress, inflammation, and muscle soreness in an 894-km relay trail run. Eur J Appl Physiol. 2012 May;112(5):1839.48.
- Couch DG, Tasker C, Theophilidou E, Lund JN, O'Sullivan SE. Cannabidiol and palmitoylethanolamide are anti-inflammatory in the acutely inflamed human colon. Clin Sci(Lond). 2017 Oct 25;131(21):2611.26.
- Koay LC, Rigby RJ, Wright KL. Cannabinoid-induced autophagy regulates suppressor of cytokine signaling-3 in intestinal epithelium. Am J Physiol Gastrointest Liver Physiol. 2014 Jul 15;307(2):G140.8.
- Kozela E, Juknat A, Kaushansky N, Rimmerman N, Ben-Nun A, Vogel Z. Cannabinoids decrease the th17 inflammatory autoimmune phenotype. J Neuroimmune Pharmacol. 2013 Dec;8(5):1265.76.
- De Filippis D, Esposito G, Cirillo C, Cipriano M, De Winter BY, Scuderi C, Sarnelli G, Cuomo R, Steardo L, De Man JG, Iuvone T. Cannabidiol reduces intestinal inflammation through the control of neuroimmune axis. PLoS One. 2011;6(12):e28159.
- Booz GW. Cannabidiol as an emergent therapeutic strategy for lessening the impact of inflammation on oxidative stress. Free Radic Biol Med. 2011 Sep 1;51(5):1054.61.
- Xiong W, Cui T, Cheng K, Yang F, Chen SR, Willenbring D, Guan Y, Pan HL, Ren K, Xu Y, Zhang L. Cannabinoids suppress inflammatory and neuropathic pain by targeting α3 glycine receptors. J Exp Med. 2012 Jun 4;209(6):1121.34.
- Jadoon KA, Ratcliffe SH, Barrett DA, Thomas EL, Stott C, Bell JD, O'Sullivan SE, Tan GD. Efficacy and Safety of Cannabidiol and Tetrahydrocannabivarin on Glycemic and Lipid Parameters in Patients With Type 2 Diabetes: A Randomized, Double-Blind, Placebo-Controlled, Parallel Group Pilot Study. Diabetes Care. 2016 Oct;39(10):1777.86.
- Cunetti L, Manzo L, Peyraube R, Arnaiz J, Curi L, Orihuela S. Chronic Pain Treatment With Cannabidiol in Kidney Transplant Patients in Uruguay. Transplant Proc. 2018 Mar;50(2):461.4.
- Corroon J, Phillips JA. A Cross-Sectional Study of Cannabidiol Users. Cannabis Cannabinoid Res. 2018 Jul 1;3(1):152.61.