What the Relationship Between Your Endocannabinoid System and the Meno-Journey Could Change About Everything
Hot flashes. Night sweats. Brain fog. Disrupted sleep. Anxiety that seems to come from nowhere. Joint pain that wasn't there last year. A mood that feels like it belongs to someone else.
If you are in the midst of your meno-journey, you know this list intimately. And chances are, you have heard plenty about managing these signals, from hormone therapy to lifestyle changes to the growing universe of supplements promising relief.
But in all that noise, there has been a significant omission. One that I believe could change everything about how you understand what is happening in your body right now.
Your body has a master regulatory system that works in direct partnership with estrogen. When estrogen declines, this system declines with it. And here is the part that stops most women in their tracks: this system regulates temperature, mood, anxiety, sleep, memory, and inflammation.
Sound familiar?
It is called the endocannabinoid system. And it is the missing piece of the conversation that every woman in midlife deserves to have.
A Plant With a Long Memory
Before we go further into the science, there is something worth knowing about the plant at the center of this conversation.
Cannabis is not new. Not even close.
Ancient texts from Egypt, China, Persia, Israel, Syria, and other countries describe a wide range of cannabis uses, including for menstrual disorders and cramps, childbirth, postpartum hemorrhage, lactation, and breast swelling and pain. Sumerian tablets from 2000 BCE describe cannabis preparations used to ease labor pains and facilitate childbirth. Queen Victoria's physician administered monthly doses of cannabis indica for menstrual pain. In China, the first recorded medicinal use dates back nearly 5,000 years. AJEMHemp Flower Co.
What was understood intuitively across thousands of years of human experience, we are now beginning to understand scientifically. And what the science is revealing is nothing short of remarkable.
Meet Your Endocannabinoid System
The endocannabinoid system, or ECS, is one of the most vast and important regulatory networks in the human body. And yet, if you have never heard of it, you are not alone. It was only formally identified in 1992, when Israeli researcher Dr. Raphael Mechoulam discovered the first known endocannabinoid in the human brain: a compound he named anandamide, from the Sanskrit word for bliss.
The ECS is found in nearly all animals, from mammals to some of the most primitive species, with insects being the notable exception. Its early emergence in the evolution of life on earth signals its fundamental biological importance. It has been part of animal life for hundreds of millions of years. It is not a side system or a secondary pathway. It is foundational. PubMed Central
And here is what that system does.
The ECS is your body's master balancing system. It works constantly, quietly, to keep everything in equilibrium, what scientists call homeostasis. The ECS is involved in a variety of physiological and psychological processes, including regulating body temperature, mood, anxiety, and sleep, and evidence suggests that this system significantly impacts fertility and reproduction. It also plays a central role in the regulation of learning and memory processes, with the fine-tuned regulation of neural transmission likely being the key mechanism underlying this function. Lippincott Williams & WilkinsSpringer
Read that list again slowly.
Temperature. Mood. Anxiety. Sleep. Memory. Fertility and reproduction.
Those are also the exact systems the meno-journey disrupts.
That is not a coincidence.
The Relationship Between the ECS and Estrogen That No One Told You About
Here is what the research is beginning to confirm, and what I believe every woman in midlife deserves to know.
Estrogen and your ECS are not separate systems operating in parallel. They are in constant, bidirectional conversation. The human ovary produces the endogenous cannabinoid anandamide, with peak plasma levels occurring at ovulation and correlating with estrogen levels, suggesting that anandamide production may be controlled by estrogen. Lippincott Williams & Wilkins
In other words, when estrogen is thriving, so is your ECS. When estrogen begins to decline, your ECS declines with it. Lower or fluctuating levels of estrogen can affect the endocannabinoid system, which in turn may partly explain the effects of perimenopause and menopause, such as depression, anxiety, mood swings, lower libido, and difficulty sleeping. HealthCentral
And there is one more piece of this picture that deserves to stop you in your tracks: after the brain, the female reproductive system is the organ with the most endocannabinoid receptors in the body. NoCamels
This system was not incidental to women's health. It was central to it all along. The fact that most women in midlife have never been told this is not an oversight. It is a gap in women's healthcare that I am determined to help close.
Menopause Is an Inflammatory Event
This is not a metaphor. This is biology.
Many physicians now describe menopause as a systemic inflammatory event, and the research supports them. As estrogen and progesterone decline during menopause, the body experiences changes in inflammatory signaling. Researchers have observed that certain inflammatory markers increase during this transition, which may influence sleep quality, cognitive function, and emotional well-being. Blue Sky Ventures
Estrogen is one of the body's most powerful natural anti-inflammatory agents. When it declines, that protection declines with it. The result is a body running hotter at a cellular level, in every sense. Chronic low-grade inflammation is implicated in joint pain, cardiovascular risk, disrupted sleep, mood instability, and cognitive changes. It is the undercurrent beneath many of the signals women experience in the meno-journey, and it rarely gets named as such.
CBD, one of the primary plant cannabinoids, has well-documented anti-inflammatory properties. CBD interacts with endocannabinoid receptors in immune cells and appears to reduce inflammatory responses. This is not incidental to why it may help women in midlife. It is precisely the point. JoinMIDI
The Signals of the Meno-Journey, Decoded Through the ECS
When we understand the ECS and its relationship to estrogen, the signals of the meno-journey begin to make a different kind of sense. They are not random. They are not signs that something is broken. They are the body communicating, clearly and persistently, that a system it has always relied on is asking for support.
The heat that wakes you at 3am. The ECS plays a key role in regulating body temperature through the hypothalamus, the brain's thermostat. Natural compounds like anandamide activate cannabinoid channels that promote thermal balance. As estrogen and endocannabinoid levels decline together, that thermostat becomes less reliable. Hot flashes are not random misfires. They are the ECS calling out. Veriheal
The anxiety that arrives uninvited. Preclinical research suggests that estrogen modulates anxiety through the endocannabinoid system, and administration of cannabinoid-based therapies reduces anxiety in ovariectomized animals. The nervousness, the racing thoughts, the sense of being perpetually on edge: these are, in part, the downstream effects of a depleted ECS. Lippincott Williams & Wilkins
The sleep that no longer restores. The ECS directly regulates sleep architecture. As endocannabinoid levels drop alongside estrogen, the body loses some of its most reliable natural tools for moving into and sustaining deep rest.
The brain fog. This one deserves particular care, because it frightens so many women, and I understand why. Declining estrogen levels can lead to increased inflammatory markers that affect brain function and cognitive performance. But here is what the research also tells us, and what I want you to hold onto: most women experiencing brain fog and cognitive changes related to perimenopause will likely see improvement within a few years after the last menstrual period. The fog is heaviest during perimenopause, when hormones are fluctuating most wildly. On the other side, for most women, clarity returns. Supporting your ECS through that passage, including its role in reducing inflammation and supporting memory and sleep, is one of the most direct things you can do for your cognitive health right now. RuthieharperDr. Kathleen Mahannah
The joint pain and physical discomfort. Estrogen helps regulate inflammation in the body, and its decline during perimenopause can contribute to increased joint pain and stiffness. CBD's anti-inflammatory properties may help address this signal by interacting with endocannabinoid receptors in immune cells. JoinMIDI
The Dance: Supporting Your ECS With Plant Cannabinoids
This is where plant cannabinoids enter the picture.
I am not talking about replacing your hormones. I am not talking about overriding your body or numbing what it is trying to tell you. I am talking about something more like a collaboration: intentionally and thoughtfully supporting the system that was always working alongside your estrogen, so that even as hormones shift, your body has what it needs to keep finding its balance.
Plant cannabinoids interact with ECS receptors throughout the body, potentially modulating processes related to inflammation, pain perception, mood regulation, sleep, and memory, all areas deeply affected during the meno-journey. While not directly replacing hormones, cannabinoids may help address the downstream effects of hormonal changes, including the inflammation that sits at the center of so much of what women experience in this passage.
What CLEA Was Made For: Five Ways to Support Your ECS Through the Meno-Journey
I founded CLEA Midlife in the midst of my own meno-journey. What changed everything for me was something most women don't have access to: my husband, co-founder of the pioneering cannabinoid wellness company Papa & Barkley, is an award-winning cannabinoid product formulator. When he began formulating products specifically for what I was experiencing, and they worked, I knew every woman navigating this passage deserved the same. The same access. The same quality. The same results.
Every CLEA product was formulated with clinically meaningful doses of premium, clean, third-party tested cannabinoids, because I believe that if we are going to ask your ECS to show up for you, we owe it the same in return.
FOCUS | Our 50mg CBG capsule for the brain fog that perimenopause can bring. CBG is known for its cognitively uplifting, mentally energizing properties, not a stimulant, but meaningful support for the clarity that inflammation and hormonal fluctuation can temporarily obscure. And that, for most women, will return.
EASE | Our 50mg CBD capsule works directly at the intersection of inflammation and nervous system dysregulation, two forces at the very heart of the meno-journey. For the woman who feels perpetually on edge, physically uncomfortable, or simply unable to unwind.
SLEEP | A precise nighttime blend of 50mg CBD, 2mg CBN, and 2mg THC, formulated to work with the ECS's own role in sleep regulation. For the woman whose nights have become unpredictable, and whose body has forgotten what deep rest feels like.
CALM | A precisely microdosed 4mg CBD and 2mg THC beverage booster for the woman who wants a gentle, ritual way to unwind at the end of her day. All the softening of an evening ritual. None of the inflammatory consequences alcohol increasingly brings.
NOURISH | Our 1,100mg full-spectrum CBD body oil brings the ECS's anti-inflammatory and skin-supporting properties directly to the body's largest organ. Because your skin is moving through this passage too, and it deserves the same care and attention as everything else.
An Honest Word About the Research
The science here is real, credible, and growing rapidly. What I have shared in this piece is drawn from peer-reviewed journals including the Journal of the North American Menopause Society and the Austin Journal of Obstetrics and Gynecology, and from research conducted at institutions including Rutgers University and Mass General Brigham. I have also been transparent where studies are still largely preclinical or observational. Large-scale human clinical trials are underway globally, and the picture is sharpening every year.
I believe that transparency is not a weakness. It is the foundation of informed choice. And informed choice is something every woman in midlife deserves, especially when it comes to her own body.
She Has Been Doing This Work for a Very Long Time
We are talking about a plant that predates every pharmaceutical on the market today by thousands of years. A plant that healers, midwives, and physicians across dozens of cultures reached for, specifically for women's health, long before modern medicine had a word for any of it.
One more thing worth noting: cannabis is a dioecious plant, meaning it exists as both male and female. And it is the female plant that produces the cannabinoids, the THC, the CBD, the CBG, the CBN, that support your endocannabinoid system.
She has been doing this work for a very long time.
Welcome to the dance. Welcome to your Menomorphosis.
If you are new to cannabinoids, I always recommend starting low and going slow, listening closely to your body, and consulting with your healthcare provider, especially if you are taking other medications.
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Mechoulam R, et al. Isolation and structure of a brain constituent that binds to the cannabinoid receptor. Science. 1992.
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Torella M, et al. The Role of Endocannabinoid System in Menopause and Its Related-Diseases. Austin Journal of Obstetrics and Gynecology. 2021.
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Slavin MN, et al. A survey of medical cannabis use during perimenopause and postmenopause. Menopause: The Journal of the North American Menopause Society. 2022. (PMC9422771)
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Hanus LO, et al. The Endocannabinoid System of Animals. Animals (MDPI). 2019. (PMC6770351)
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Campolongo P, et al. The endocannabinoid system: An emotional buffer in the modulation of memory function. Neurobiology of Learning and Memory. 2014.
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Lutz B, et al. Roles of the Endocannabinoid System in Learning and Memory. Springer Nature. 2009.
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Russo EB. A History of Cannabis Use in Women's Health. Journal of Endocannabinoid Medicine. 2023.
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Harper R, MD. Perimenopause Brain Fog. ruthieharper.com. 2025.
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Mahannah K, ND. Menopause Brain Health Part 1. drkathleenmahannah.com.
