# For decades, runner’s high was blamed on endorphins, even though circulating … > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/for-decades-runners-high-was-blamed-on-endorphins-even-though-circulating/ > **Published:** 2026-08-14T07:12:15-04:00 | **Last Modified / Clinically Audited:** 2026-09-08T20:16:39-04:00 > **Clinical Summary:** Research shows endocannabinoids mediate runner's high. Clinical implications for exercise, mood, and cannabis therapy. Evidence-based insights. --- ✦ New CED Clinical Relevance #82 Strong Clinical Relevance High-quality evidence with meaningful patient or clinical significance. ResearchNeurologyMental HealthAnxietyPainAgingSafety Why This Matters Clinicians should understand that endocannabinoid signaling, not just endorphins, drives exercise-induced euphoria and pain relief, which has implications for counseling patients on natural mood regulation and [pain management](https://cedclinic.com/cbd-cbg-topicals-for-eczema/) through activity. This knowledge provides a neurobiological rationale for recommending exercise as a non-pharmacological intervention for depression, anxiety, and [chronic pain](https://cedclinic.com/cannabinoids-pain-management-opioid-alternative/) conditions. Patients may benefit from understanding that their body produces its own cannabinoid-like compounds during exercise, potentially reducing misconceptions about [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) while reinforcing the value of physical activity as evidence-based therapy. Clinical Summary Recent evidence indicates that the euphoric sensation experienced after aerobic exercise, commonly attributed to endorphins, is primarily mediated by endocannabinoids—the body’s endogenous cannabis-like neurotransmitters—rather than circulating opioid peptides. This mechanistic shift has important implications for understanding how physical activity produces mood elevation and analgesia in patients, particularly those managing pain, depression, or anxiety. The discovery that exercise activates the [endocannabinoid system](https://cedclinic.com/endocannabinoid-system-fear-extinction/) directly connects non-pharmacological interventions to the same neurobiological pathways targeted by cannabis therapeutics, suggesting that exercise may offer a complementary or alternative mechanism for patients who benefit from [cannabinoid effects](https://cedclinic.com/adolescent-cannabis-psychiatric-outcomes-2026-digest/). Clinicians may leverage this knowledge when counseling patients on the neurochemical basis of exercise benefits, potentially improving adherence to physical activity recommendations by clarifying that the “natural high” engages real molecular reward pathways. For patients considering or currently using cannabis for mood or [pain management](https://cedclinic.com/cbd-cbg-topicals-for-eczema/), understanding that their own exercise can activate similar endocannabinoid signaling provides a rationale for integrating structured physical activity into a comprehensive treatment plan. Dr. Caplan’s Take “The endocannabinoid hypothesis for runner’s high is compelling and well-supported by human physiology studies, but I’d note we’re still in the early stages of understanding exactly how exercise triggers these endogenous cannabinoid responses and whether that mechanistic insight translates into new clinical interventions. What’s useful for my patients is recognizing that the brain has its own sophisticated cannabinoid signaling system, which helps contextualize both the therapeutic potential and the risks we see with exogenous [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/).” Clinical Perspective 🏃 The growing scientific consensus that endocannabinoids rather than endorphins primarily mediate exercise-induced euphoria has important implications for how clinicians counsel patients on the neurobiological basis of physical activity benefits. This reframing suggests that [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) cannot simply replicate or substitute for the therapeutic effects of exercise, since exogenous cannabinoids activate the [endocannabinoid system](https://cedclinic.com/endocannabinoid-system-fear-extinction/) through different mechanisms and lack the full constellation of adaptations induced by physical exertion. Clinicians should be aware of this distinction when discussing cannabis with patients seeking mood enhancement or stress relief, as some patients may mistakenly believe cannabis offers equivalent mental health benefits to exercise. The endocannabinoid research also highlights why exercise remains a foundational, evidence-based intervention for conditions like depression and anxiety, and underscores the importance of prescribing physical activity alongside, rather than as a substitute for, other therapeutic modalities including cannabinoid- 💬 Join the Conversation Have a question about how this applies to your situation? [Ask Dr. Caplan →](https://benjamincaplan.com/ask-dr-caplan) Want to discuss this topic with other patients and caregivers? [Join the forum discussion →](https://cedclinic.com/interact/discussion-forums/forum/cannabis-related-research/) Have thoughts on this? Share it: [X Share on X](https://twitter.com/intent/tweet?text=Just%20read%20this%20on%20CEDclinic.com%3A%20For%20decades%2C%20runner%27s%20high%20was%20blamed%20on%20endorphins%2C%20even%20though%20circulating%20...%20%40drcaplan&url=https%3A%2F%2Fcedclinic.com%2F%3Fp%3D73348)[in Share on LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fcedclinic.com%2F%3Fp%3D73348)[🦅 Share on BlueSky](https://bsky.app/intent/compose?text=Just%20read%20this%3A%20For%20decades%2C%20runner%27s%20high%20was%20blamed%20on%20endorphins%2C%20even%20though%20circulating%20...%20via%20%40drcaplan.bsky.social%20https%3A%2F%2Fcedclinic.com%2F%3Fp%3D73348)[📷 Follow on Instagram](https://www.instagram.com/drbenjamincaplan)[📝 Read more on Substack](https://doctorapprovedcannabis.substack.com/)[🔔 Subscribe via RSS](https://cedclinic.com/feed/) 📰 Source: [https://scienceblog.com/t-runners-high-endocannabinoids-not-endorphins/](https://scienceblog.com/t-runners-high-endocannabinoids-not-endorphins/) Further Reading CED Clinic Blog[Why Cannabis Works](https://cedclinic.com/why-cannabis-works/) Evidence Watch[Cannabis and Heart Health](https://cedclinic.com/cannabis-cardiovascular-health-study/) CED Clinic Blog[Cannabis for Sleep](https://cedclinic.com/cannabis-for-sleep/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. 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