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What happens when a substance once feared as a dangerous “mind-altering drug” becomes one of the most fascinating tools in modern neuroscience?

In this episode of The Cadaver’s Lessons, we dive into the extraordinary history of LSD — from its accidental discovery through ergot fungus, to its role in psychiatry, government experimentation, counterculture, and today’s psychedelic renaissance.

We explore how LSD changes the brain, why it can dramatically alter perception and consciousness, and why researchers are once again studying psychedelics as potential treatments for mental health conditions.

But the story of LSD is far from simple.

Behind the science is a complicated history filled with ethical questions, secret government programs, criminalization, political fear, and missed opportunities in medical research.

📚 References 

1. Tintinalli JE, Ma OJ, Yealy DM, et al. Lysergic acid diethylamide (LSD) toxicity. Medscape. Updated June 2023. Accessed June 21, 2026. https://emedicine.medscape.com/article/1011615-overview
2. Passie T, Halpern JH, Stichtenoth DO, Emrich HM, Hintzen A. The pharmacology of lysergic acid diethylamide: a review. CNS Neurosci Ther. 2008;14(4):295-314. doi:10.1111/j.1755-5949.2008.00059.x.
3. Nichols DE. Psychedelics. Pharmacol Rev. 2016;68(2):264-355. doi:10.1124/pr.115.011478.
4. American Addiction Centers. LSD abuse and addiction: effects, risks, and treatment. American Addiction Centers. Accessed June 21, 2026. https://americanaddictioncenters.org/lsd-abuse
5. Psychedelic Alpha. Beyond clinical trials: psychedelic-assisted therapy in Europe’s real world. Psychedelic Alpha. Accessed June 21, 2026. https://psychedelicalpha.com/news/op-ed-beyond-clinical-trials-psychedelic-assisted-therapy-in-europes-real-world/
6. Carhart-Harris RL, Friston KJ. REBUS and the anarchic brain: toward a unified model of the brain action of psychedelics. Pharmacol Rev. 2019;71(3):316-344. doi:10.1124/pr.118.017160.
7. History.com Editors. History of LSD. History. Updated October 2023. Accessed June 21, 2026. https://www.history.com/articles/history-of-lsd
8. Harvard University Graduate School of Arts and Sciences. A long strange trip: the history and science of LSD. Harvard University. Accessed June 21, 2026. https://gsas.harvard.edu/news/long-strange-trip
9. BBC Culture. The bizarre story of the world’s first LSD trip. BBC. Published April 10, 2026. Accessed June 21, 2026. https://www.bbc.com/culture/article/20260410-the-bizarre-story-of-the-worlds-first-lsd-trip