The Endocannabinoid System: How CBD Works in Your Body
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Time to read 6 min
To understand how CBD works, you cannot ignore the endocannabinoid system (ECS). The endocannabinoid system is found in the brain and nervous system of all mammal species and enables the interaction of CBD with the body. Cannabinoids such as CBD or THC can dock to various receptors of the ECS and thus influence various bodily functions.
Table of Contents
What is the Endocannabinoid System? History and Research Naming Current Significance and Research Structure and Function of the Endocannabinoid System Structure of the ECS Receptors Cannabinoids Enzymes Function of the ECS What bodily functions are influenced by the ECS? ECS and CBD Interaction of CBD with the ECS Use of CBD for Health Promotion and Maintaining Balance ECS - Facts to keep
What is the Endocannabinoid System?
The endocannabinoid system (abbreviated as ECS) is a complex communication system between the body and the brain, discovered in the early 1990s. It plays an important role in regulating various bodily functions and processes, including pain perception, mood, appetite, sleep, and immune functions.¹
History and Research
The discovery of the endocannabinoid system is closely linked to the research of cannabis and its active compounds, the cannabinoids. In 1964, Israeli scientist Raphael Mechoulam succeeded in isolating the cannabinoid THC. This discovery led to further research into how substances from the hemp plant work in the human body.
In the late 1980s and early 1990s, scientists identified the first cannabinoid receptors in the human brain. These receptors, known as CB1 and CB2, form an essential part of the endocannabinoid system. CB1 receptors are mainly located in the brain and nervous system, while CB2 receptors are found more in the immune system and peripheral organs.
Naming
The name "Endocannabinoid System" is derived from "Endo-", meaning "within", and "Cannabinoid". This refers to substances that occur naturally in the body and act similarly to the cannabinoids from the cannabis plant. The endogenous cannabinoids, known as endocannabinoids, are substances that the body produces itself and that can dock to cannabinoid receptors.
Current Significance and Research
The endocannabinoid system is currently being intensively researched, as it offers many potential avenues for treating a variety of diseases. Understanding the ECS has helped to explore the therapeutic potential of substances like CBD in medicine.
Structure and Function of the Endocannabinoid System
Structure of the ECS
The endocannabinoid system consists of the following components:
- Receptors
- Cannabinoids (signaling molecules)
- Enzymes
Simply put, cannabinoids bind to receptors, triggering various reactions in the body. Enzymes are then responsible for the synthesis and breakdown of cannabinoids.
The endocannabinoid system is a complex network present in almost all tissues of the body. It plays a crucial role in regulating a variety of physiological processes and aims to maintain the body's internal balance (homeostasis).² Thus, the ECS plays a central role in maintaining physical balance and health.
Here is a detailed explanation of the components and functions of the endocannabinoid system:
Receptors
-
CB1 receptors: These are mainly found in the brain and central nervous system, but also in some peripheral organs and tissues. They are involved in regulating pain, mood, appetite, and memory.³
- CB2 receptors: These are primarily found in the immune system and peripheral organs. They are involved in regulating inflammatory responses and immune responses.³
Cannabinoids
-
Endogenous cannabinoids (endocannabinoids): These are produced by the body itself. The best known are anandamide and 2-arachidonoylglycerol (2-AG). They are synthesized as needed and bind to CB1 and CB2 receptors to regulate various bodily functions.
- Exogenous cannabinoids: These come from outside, mainly from the cannabis plant. These include THC, which has a psychoactive effect, and CBD, which is not psychoactive but has therapeutic effects.
Enzymes
These are responsible for the synthesis and breakdown of endocannabinoids.⁴ Key enzymes include:
-
Fatty acid amide hydrolase (FAAH): Breaks down anandamide.
- Monoacylglycerol lipase (MAGL): Breaks down 2-AG.
How the ECS Works
Overall, the endocannabinoid system acts like a finely tuned regulatory system that responds to changes in the body and helps maintain a healthy balance in a variety of physiological processes:
- When the body detects an imbalance (e.g., pain, stress, inflammation), endocannabinoids are synthesized.
- These endocannabinoids bind to CB1 or CB2 receptors and trigger signals aimed at restoring balance.
For example, the binding of endocannabinoids to CB1 receptors in the brain can lead to fewer pain signals being sent, resulting in pain relief.
- After they have performed their function, endocannabinoids are broken down by enzymes such as FAAH and MAGL to prevent them from continuing to act on the system.
What bodily functions are influenced by the ECS?
The endocannabinoid system is a multifunctional system that acts as a key regulator in almost all important bodily functions and plays a central role in maintaining health and balance in the body.²
The following bodily functions and processes can be influenced by the endocannabinoid system:
Regulation of homeostasis:
Maintaining balance in various body systems.
Adapting to internal and external changes to preserve stability.
Pain modulation:
Reducing pain sensitivity by influencing pain pathways.
Intervention in inflammatory processes and associated pain reactions.
Stress response and emotions:
Influencing stress reactions and anxiety.
Regulation of mood and emotional processing.
Neuroprotection and neuronal development:
Protection of nerve cells from damage.
Support for neuronal development.
Influence on learning processes and memory.
Appetite regulation and digestion:
Influence on hunger and food intake.
Involvement in digestive processes.
Immune function:
Modulation of the immune system and inflammatory responses.
Supporting the body in fighting diseases.
Reproduction and sexual behavior:
Influencing reproductive functions and sexual behavior.
Cardiovascular functions:
Regulation of heart rate and blood pressure.
Influence on blood circulation and vascular functions.
Energy metabolism and body temperature:
Involvement in regulating energy metabolism.
Influence on body temperature and thermoregulatory processes.
Bone growth and density:
Regulation of bone growth and density.
Influence on bone health and repair.
ECS and CBD
CBD (cannabidiol) is a non-psychoactive cannabinoid derived from the cannabis plant. It interacts with the body's endocannabinoid system (ECS), but in a different way than the better-known cannabinoid THC (tetrahydrocannabinol). CBD influences the ECS and can thus offer various health benefits.⁵
Interaction of CBD with the ECS
- Indirect influence on receptors: CBD primarily acts indirectly on the cannabinoid receptors CB1 and CB2. It does not bind directly to these receptors like THC but influences them indirectly and modulates their activity.
- Increase in endocannabinoid availability: CBD can increase the concentration of endocannabinoids such as anandamide by inhibiting their breakdown. This occurs by inhibiting enzymes like FAAH, which are responsible for the breakdown of these molecules.
Use of CBD for Health Promotion and Maintaining Balance
- Pain relief: CBD can help treat chronic pain by modulating pain signals.
- Anti-inflammatory: CBD has anti-inflammatory properties that can be helpful in conditions like arthritis.
- Stress and anxiety: CBD is often used to relieve anxiety and stress, as it can have a calming effect.
- Sleep quality: CBD can improve sleep quality by helping to reduce difficulty falling asleep and waking up at night.
- Neuroprotection: There is evidence that CBD has neuroprotective properties, making it relevant for the treatment of neurodegenerative diseases.
- Epilepsy: CBD has proven effective in the treatment of some forms of epilepsy, particularly rare and severe forms.
- Mental Health: CBD is being researched for its potential role in treating mental illnesses such as schizophrenia or depression.
However, it is important to note that research into CBD and its effects is ongoing, and many of its potential health benefits are still being investigated.
ECS - Facts to keep
✓ The endocannabinoid system (ECS) is part of our nervous system and enables the interaction of CBD with our body.
✓ The ECS plays a central role in maintaining physical balance and health.
✓ The ECS consists of receptors, cannabinoids, and enzymes.
✓ There are endogenous (= endocannabinoids) and exogenous cannabinoids.
✓ CBD and THC are exogenous cannabinoids.
✓ Cannabinoids bind to the receptors of the ECS, triggering different reactions in the body.
✓ The ECS can influence various bodily functions and processes, including pain perception, mood, appetite, sleep, and immune functions.
✓ CBD products such as CBD oils can support the ECS externally.
Sources and Studies
¹ R. Schicho, M. Storr: A potential role for GPR55 in gastrointestinal functions. In: Current Opinion in Pharmacology. Volume 12, Number 6, December 2012, pp. 653–658
² Sallaberry, C. & Astern, L. (2018). The Endocannabinoid System, our universal regulator. Journal of Young Investigators. 34 (6). pp. 48-55. Downloaded on January 26, 2024, from [Source]
³ Leinow, L. & Birnbaum, J. (2019). Heilen mit CBD. Das wissenschaftlich fundierte Handbuch zur medizinischen Anwendung von Cannabidiol. Riva Verlag: Munich.
⁴ Grotenhermen, F. (2017). Endogene Cannabinoid und das Endocannabinoidsystem. Springer Reference Psychologie book series. Downloaded on January 26, 2024, from [Source]
⁵ Patel, R. (2019). Gesund mit CBD Öl. Das Wundermittel gegen Stress, Schmerzen, Schlafstörungen und mehr. Dorling Kindersley Verlag: Munich.
