Psilocybin is a naturally occurring psychedelic compound found in certain types of mushrooms. It is thought to have been used for centuries by indigenous peoples in the Americas for spiritual and ceremonial purposes. The use of psilocybin mushrooms was first documented by Spanish conquistadors in the 16th century, who reported their use by the Aztecs in religious ceremonies.

In the 1950s and 1960s, psilocybin and other psychedelics such as LSD (lysergic acid diethylamide) and DMT (dimethyltryptamine) gained popularity in the Western world as a means of inducing altered states of consciousness and as a tool for psychological exploration. Psilocybin was initially synthesized in 1958 by Dr. Albert Hofmann, the same scientist who had previously synthesized LSD.
During this time, psilocybin and other psychedelics were the subject of extensive research and experimentation, and were studied for their potential therapeutic use in the treatment of a wide range of conditions, including addiction, depression, and anxiety. However, due to the increasing cultural and political backlash against the use of psychedelics in the late 1960s and early 1970s, research into the therapeutic use of psilocybin and other psychedelics largely came to a halt.
In the 1970s, psilocybin and other psychedelics were classified as Schedule I controlled substances in the United States, which effectively prohibited their use in research and clinical settings. In the decades that followed, there was relatively little research into the potential therapeutic use of psilocybin and other psychedelics.
However, in recent years, there has been a resurgence of interest in the potential therapeutic use of psilocybin and other psychedelics. A growing body of research suggests that psilocybin may have promise as a treatment for a range of mental health conditions, including treatment-resistant depression, anxiety, and post-traumatic stress disorder (PTSD). Psilocybin is also being studied for its potential use in end-of-life care, as it may help to reduce anxiety and depression in people with terminal illness.
There is good evidence to suggest that psilocybin, a naturally occurring psychedelic compound found in certain types of mushrooms, may have potential as a treatment for depression. Psilocybin works by activating serotonin receptors in the brain, which can lead to changes in mood, cognition, and perception. A small number of clinical studies have shown that psilocybin may be effective in reducing symptoms of treatment-resistant depression, which is a type of depression that does not respond to standard antidepressant medications. In a pilot study of patients with treatment-resistant depression, a single dose of psilocybin was associated with a significant reduction in depression symptoms that persisted for up to a year after treatment (https://www.hopkinsmedicine.org/news/newsroom/news-releases/psilocybin-treatment-for-major-depression-effective-for-up-to-a-year-for-most-patients-study-shows). Another study of patients with depression and anxiety found that psilocybin was associated with a significant reduction in depression symptoms and an increase in quality of life.
Here is a video summary of the Johns Hopkins study: https://www.youtube.com/watch?v=dBK1cBNr6Ss
Research and Articles:
- https://www.ucsf.edu/news/2022/04/422606/psilocybin-rewires-brain-people-depression
- https://www.nature.com/articles/d41586-022-02872-9
- https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(22)00538-7/fulltext
- https://www.columbiapsychiatry.org/news/psilocybin-found-rapidly-improve-depressive-symptoms-clinical-trial