A study from Oregon State University surfaces a quiet contradiction embedded in one of the most common reasons people reach for cannabis: the pursuit of calm may be quietly eroding the body's own capacity for it. Researchers found that frequent cannabis users wake each morning with elevated cortisol levels, suggesting that chronic use may gradually unsettle the very hormonal rhythms it is meant to soothe. The finding invites a deeper question about the difference between relief and repair — and whether a substance that quiets the feeling of stress can nonetheless deepen its biological roots.
Cannabis Users Show Higher Morning Cortisol Levels, Study Finds
A feedback loop in which stress drives cannabis use, which disrupts stress regulation
Mark
So the study found that regular cannabis users have higher cortisol in the morning. But doesn't cannabis reduce stress in the moment?
Mimi
It does, yes—that's the trap. Cannabis provides immediate relief, which is why people reach for it. But the research suggests that over time, frequent use may actually damage the system that's supposed to regulate stress naturally.
Mark
How does that damage happen? Is it the THC itself, or something about the pattern of use?
Mimi
The study doesn't pinpoint the exact mechanism, but the theory is that regular cannabis use interferes with the hypothalamic-pituitary-adrenal axis—the body's stress control center. When you use frequently, that system may stop functioning normally.
Mark
And then what? The person wakes up stressed, uses cannabis to feel better, and the cycle continues?
Mimi
Exactly. You end up with chronically elevated cortisol, which is linked to anxiety, depression, even heart disease. So you're trying to treat stress with something that may be making the underlying problem worse.
Mark
Does the study say how long it takes for this to happen, or how much cannabis triggers it?
Mimi
The study identifies the pattern in frequent users but doesn't specify a threshold or timeline. That's part of what makes this important—we don't yet know the dose or duration that tips someone into this disrupted state.
The Pulse
- The central tension is almost poetic: people use cannabis to escape stress, yet the science now suggests regular use may be quietly raising their baseline stress hormone levels.
- Elevated morning cortisol is not a minor footnote — prolonged high levels are associated with anxiety, depression, and cardiovascular disease, compounding the very conditions many users are trying to manage.
- The disruption appears to reach into the hypothalamic-pituitary-adrenal axis, the body's master stress-regulation system, suggesting the interference is structural, not superficial.
- Researchers warn of a self-reinforcing cycle: a dysregulated stress system may drive people toward more cannabis use, which further destabilizes the system, tightening the loop.
- The study does not dismiss cannabis outright, but it does challenge the widespread assumption that it is a low-risk tool for stress management — particularly for frequent, long-term users.
A study from Oregon State University surfaces a quiet contradiction embedded in one of the most common reasons people reach for cannabis: the pursuit of calm may be quietly eroding the body's own capacity for it. Researchers found that frequent cannabis users wake each morning with elevated cortisol levels, suggesting that chronic use may gradually unsettle the very hormonal rhythms it is meant to soothe. The finding invites a deeper question about the difference between relief and repair — and whether a substance that quiets the feeling of stress can nonetheless deepen its biological roots.
A new study from Oregon State University has identified a troubling paradox at the core of cannabis use: the drug many people rely on for stress relief may actually be worsening the biological conditions that produce stress. Researchers found that frequent cannabis users wake up with higher cortisol levels than non-users — a meaningful finding, given that cortisol is the body's primary stress hormone.
Cortisol is not inherently harmful. The adrenal glands release it to regulate blood pressure, blood sugar, and immune response, and short-term spikes serve a genuine protective purpose. But when levels remain elevated over weeks or months, the consequences grow serious — linking to anxiety, depression, and heart disease.
Led by Anita Cservenka of OSU's College of Liberal Arts, the research examined how regular cannabis use affects the hypothalamic-pituitary-adrenal axis, the neuroendocrine system that governs the body's entire stress response. The team found that frequent users already carried elevated cortisol the moment they woke — suggesting their natural daily stress rhythms may be disrupted.
Cservenka raises the possibility of a feedback loop: a poorly regulated stress system may push people toward more cannabis use, which further disrupts the system, which generates more stress. The cycle, once established, may be difficult to exit.
Cannabis interacts with the body's endocannabinoid system, influencing mood, memory, sleep, and immunity. While it is prescribed medically in some countries for conditions like chronic pain and epilepsy, recreational use remains broadly restricted. What this research ultimately challenges is not cannabis itself, but the assumption that it offers a safe or sustainable path through stress — a question that now carries new biological weight.
A new study from Oregon State University has uncovered a troubling paradox at the heart of why many people turn to cannabis: the drug may actually be making their stress worse, not better. Researchers found that people who use cannabis regularly wake up with higher levels of cortisol—the hormone the body releases in response to stress—than those who don't use the drug at all.
Cortisol itself isn't the enemy. The adrenal glands produce it to help the body fight infection, maintain blood pressure, and regulate blood sugar and metabolism. In the short term, a spike in cortisol is exactly what you need when facing a genuine threat. But when cortisol stays elevated for weeks or months, the consequences accumulate. Prolonged high cortisol has been linked to anxiety, depression, and heart disease.
The irony is sharp: stress is one of the primary reasons people report using cannabis in the first place. The drug does provide temporary relief. But according to the research led by Anita Cservenka of the OSU College of Liberal Arts, frequent use over time may actually damage the very biological systems responsible for managing stress. The team investigated how regular cannabis use affects the hypothalamic-pituitary-adrenal axis, the major neuroendocrine system that coordinates the body's entire stress response. What they found was that frequent users already had elevated cortisol circulating through their bodies the moment they woke up.
Cservenka suggests it's reasonable to consider that regular cannabis users may experience disruptions in their normal daily stress rhythms—the natural rise and fall of cortisol that healthy bodies maintain throughout the day. When that rhythm breaks down, something darker may take hold: a feedback loop in which a poorly regulated stress system drives people to use more cannabis, which further disrupts the system, which creates more stress. The cycle feeds itself.
Cannabis contains THC, the psychoactive compound responsible for the high, along with other cannabinoids that interact with the body's endocannabinoid system—a network of receptors involved in regulating immunity, mood, memory, sleep, and appetite. While medical cannabis is prescribed in some countries for chronic pain, multiple sclerosis, epilepsy, and other conditions, recreational use remains illegal in most jurisdictions. In Australia, for instance, medicinal cannabis is available by prescription but recreational use is prohibited everywhere except the Australian Capital Territory.
This research matters because it challenges a common assumption: that cannabis is a safe way to manage stress. The study suggests the opposite may be true for regular users. The question now is whether people caught in this cycle can break it, and whether understanding the mechanism might help them do so.
Notable Quotes
Frequent cannabis users may experience disruptions in their normal daily stress rhythms, potentially creating a feedback cycle in which a poorly regulated stress system encourages further cannabis use.— Anita Cservenka, Oregon State University College of Liberal Arts
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