"In this highly anticipated debut, Robin Carhart-Harris—one of the leading and most creative researchers in today's psychedelic renaissance—illuminates the history, psychology, philosophy, and neuroscience of soul-revealing substances, both natural and human-made. Engaging and accessible, How Psychedelics Work introduces readers to possibilities that promise to revolutionize the mental health field." —Gabor Maté, M.D., New York Times bestselling author of The Myth of Normal

"Psychedelics offer some of the most wonderful and mysterious human experiences. Few people have explored them as deeply as Robin Carhart-Harris has, or done as much to lift the taboos around them. Listening to his account is an opportunity not to be missed." —Carlo Rovelli, author of Seven Brief Lessons on Physics

"Psychedelic medicine is opening an extraordinary new frontier in our understanding of the mind and our innate capacity to heal. Robin Carhart-Harris, one of the field’s most rigorous and visionary pioneers, shows how these remarkable compounds may help us break free from the patterns that keep us trapped—and rediscover meaning, connection, and wholeness. Scientifically grounded, deeply humane, and refreshingly clear, How Psychedelics Work is essential reading for anyone interested in the future of mental health." —Mark Hyman, M.D., co-founder and Chief Medical Officer of Function Health and author of Young Forever

"Robin Carhart-Harris is currently the foremost neuroscientist in psychedelic studies, and this page-turner delivers exactly what we need right now: a compelling, evidence-respecting map of how psychedelics may function as 'codebreakers' for stuck self-states. Temporarily loosening rigid mental grooves through increased plasticity and measurable brain-network shifts, trauma and depression can be processed rather than merely suppressed. This book’s power isn’t just its solid neuroscience, but even more: its profound implications for the relief of suffering. Psychedelics in and of themselves aren’t magic fireworks; set/setting and therapy are critical. Failure to guarantee safety can turn a high-potential intervention into lasting harm. From its deep attention to ego dissolution and embodied suffering, to its careful discussion of outcomes in depression and beyond, this synthesis makes a persuasive case that modern medicine is overdue for a new, relational, evidence-based way to relieve suffering—one that restores meaning-making, acceptance, reconnection, and long-term adaptability." —Bessel van der Kolk, #1 New York Times-bestelling author of The Body Keeps the Score

"Robin Carhart-Harris has played a singular role in shaping the modern scientific conversation about psychedelics. In this carefully written book, he brings the creativity and conceptual daring that have made him one of the field’s most influential voices, offering a thought-provoking exploration of mind, brain, and therapeutic change." —Rachel Yehuda, Director of the Traumatic Stress Studies Division at the Icahn School of Medicine at Mount Sinai

"Psychedelics can be a candle of healing in a hurricane of trauma. Robin Carhart-Harris, a leading authority on how psychedelics work, shows us in his landmark book exactly how they can transform our personal lives and hopefully our culture." —Rick Doblin, Ph.D., Founder and President, MAPS

"Robin Carhart-Harris opens a window into the hidden landscape of the mind, showing with clarity and wonder how psychedelics can help us break old patterns and rediscover connection. As someone who has spent a lifetime making the invisible visible , I found this book a revelation." — Louie Schwartzberg, filmmaker, Fantastic Fungi