Written by: CBD Wellness Education Team
Reviewed by: Dr. Matthew Scott, PhD & DHSc
Originally published: June 18, 2010 | Last reviewed: June 2026
The Endocannabinoid System (ECS); What Is It & How Does It Work?
The endocannabinoid system (ECS) is a biological system made up of endocannabinoids (endogenous lipid-based retrograde neurotransmitters that bind to cannabinoid receptors (CBRs)), and cannabinoid receptor proteins that are expressed throughout the vertebrate central nervous system (including the brain) and peripheral nervous system. This network of endocannabinoids and receptors support and regulate our internal equilibrium, creating homeostasis. The ECS involves regulating physiological and cognitive processes; this includes fertility, pregnancy, prenatal & postnatal development, various activities in the immune system, appetite, pain sensation, mood, and memory.
The main role of the ECS is to create and promote homeostasis — allowing the body to maintain internal balance and function at its best.
What is the Endocannabinoid System?
The ECS is found in both humans and animals and is responsible for regulating a variety of functions including: pain sensitivity, inflammation response, appetite, sleep patterns, mood balance, memory retention, cognitive and motor functions, and more.
The Endocannabinoid System is comprised of (3) parts:
1. Endocannabinoids & Cannabinoids — chemical compounds produced naturally inside mammals. The two best known are Anandamide (AEA) and 2-arachidonoyl glycerol (2-AG).
2. Cannabinoid Receptors — CB1 receptors (primarily in the brain and CNS) and CB2 receptors (primarily in peripheral tissues, GI system, and immune system). These receptors detect and communicate biochemical signals throughout the body.
3. ECS Enzymes — Fatty Acid Amide Hydrolase (FAAH) and Monoacylglycerol Lipase (MAGL) are responsible for breaking down cannabinoids and regulating ECS activity.
Deficiencies in the Endocannabinoid System
ECS deficiencies are linked to a variety of health-related issues including anxiety, mood imbalances, migraines, gut health, chronic pain, and inflammation. A Washington University neurologist proposed that "clinical endocannabinoid deficiency" (CED) may be an underlying factor in migraines, fibromyalgia, and irritable bowel disease, which have shown favorable responses to cannabinoid therapies in some research.
Phytocannabinoids & CBD
Phytocannabinoids (plant cannabinoids) interact with our ECS receptors similarly to endocannabinoids. Emerging research suggests people experiencing ECS deficiencies may benefit from Full Spectrum, CBD Rich, phytocannabinoid products. Research in this area is ongoing.
CBD interacts with our ECS in multiple ways. Research is ongoing across many conditions including anxiety, sleep disorders, chronic pain, inflammation, and more.
Note: Research into CBD is ongoing. CBD products are not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any new supplement.
Shop CBD Wellness Products
CBD Wellness offers proprietary, lab-tested full-spectrum products formulated to support your ECS:
- CBD-Rich Tinctures — Full-spectrum, 750mg to 3000mg
- CBG-Rich Tincture — The "parent" cannabinoid for ECS support
- CBN-Rich Tincture — For sleep and relaxation support
- CBC-Rich Tincture — For mood and anti-inflammatory support
Related Education
- The Entourage Effect & Cannabis CBD
- Full Spectrum vs Broad Spectrum vs CBD Isolate
- What Is CBD (Cannabidiol)?
- CBD for Anxiety & Stress: A Science-Backed Guide
CBD Wellness Commitment
- 100% organically grown, non-GMO, full spectrum, CBD rich hemp
- Grown, extracted, and formulated in the USA
- Scientist & Doctor formulated — proprietary formulas exclusive to CBD Wellness
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Frequently Asked Questions: The Endocannabinoid System
What is the endocannabinoid system (ECS)?
The endocannabinoid system (ECS) is a biological network of receptors, endocannabinoids, and enzymes found throughout the human body. It regulates key functions including sleep, mood, appetite, pain, immune response, and inflammation — essentially acting as the body's master regulatory system to maintain homeostasis.
What does the ECS have to do with CBD?
CBD (cannabidiol) is a phytocannabinoid — a plant-derived compound that interacts with the ECS similarly to the body's own endocannabinoids. By supporting ECS function, CBD may help regulate the same processes the ECS controls: sleep, anxiety, pain, inflammation, and more.
What are CB1 and CB2 receptors?
CB1 receptors are found primarily in the brain and central nervous system and are associated with mood, memory, pain, and appetite. CB2 receptors are found mainly in the peripheral nervous system and immune system and are associated with inflammation and immune response. CBD interacts with both receptor types.
What is endocannabinoid deficiency?
Clinical endocannabinoid deficiency (CED) is a theory proposing that low endocannabinoid levels may contribute to conditions like migraines, fibromyalgia, and IBS. Research suggests that full-spectrum CBD products may help support ECS function in people with potential deficiencies.
Does CBD affect the ECS?
Yes. CBD interacts with the ECS in multiple ways — including influencing CB1 and CB2 receptors, inhibiting the breakdown of the endocannabinoid anandamide, and interacting with non-cannabinoid receptors like serotonin (5-HT1A) receptors. Research into CBD's full mechanism of action is ongoing.
Last Reviewed: June 12, 2026 — Reviewed by: Dr. Matthew Scott, PhD & DHSc, Chief Scientist, CBD Wellness — Next Review Scheduled: June 2027
Disclaimer: These statements have not been evaluated by the Food and Drug Administration. CBD products are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Consult your healthcare provider before starting any new supplement regimen.