Psychedelic Mushrooms in the USA: Knowledge, Patterns of Use, and Association With Health Outcomes
Richard Matzopoulos, Robert Morlock, Amy Morlock, Bernard Lerer, Leonard Lerer
Frontiers in Psychiatry January 3, 2022 DOI: 10.3389/fpsyt.2021.780696 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Cross-sectional survey Peer reviewed |
|---|---|
| Sample size | 251,297,495 |
| Population | US adults representative by region, gender, age, and race |
| Topics | Anxiety Psilocybin |
| Keywords | Demography Depression economics Population Public health Gerontology Environmental health |
| Citations | 43 |
| Key findings | Psychedelic mushroom use was associated with higher depression and anxiety scores, and was more likely among males and those with higher comorbidity scores, but less likely among those with health insurance, older age, and those living outside the western US. |
Abstract
Introduction: Popular media coverage of psychedelics use, growing research into this class of compounds for psychiatry and decriminalization initiatives, are transforming the public perception of psychedelics. However, little is known about levels of knowledge and psychedelic mushroom (PM) use among American adults.
Methods: We examined PM use and various measures of health status, quality of life, and self-reported mental health outcome measures obtained through a national on-line, cross-sectional survey of adults with a demographic composition representative of the US adult population by region, gender, age, and race (weighted N = 251,297,495) from November 2020–March 2021.
Results: General mental health and well-being were popular reasons for PM use (63.6%), although use for medically-diagnosed (31.8%) and self-diagnosed (19.0%) conditions was also common. PM users reported more depression and anxiety as reflected in higher GAD-7 and PHQ-9 scores. Factors predictive of PM use included being male [OR 1.54 95%CI 1.09–2.15] and having higher Charlson Comorbidity Index scores [OR 1.42; 95%CI 1.22–1.65]. Self-reported PM use was less likely among participants with health insurance [OR = 0.50 (0.35–0.72)], increased age [OR = 0.92 (0.90–0.93)] and, relative to those living in the west US census region, living in the northeast [OR = 0.27 (0.15–0.50)], midwest [OR = 0.34 (0.20–0.56)], and south [OR = 0.38 (0.26–0.55)]. Discussion and
Conclusions: A significant number of Americans are already “self-medicating” with PM and as growing positive media coverage of psychedelics drives public interest in the health benefits of PM, this number will increase. The association between PM use and poor mental health requires further research to inform policy.
Comparable studies
Other cross-sectional and survey studies on psilocybin for anxiety, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| The Challenging Experience Questionnaire: Characterization of challenging experiences with psilocybin mushrooms Internet survey respondents reporting challenging experiences with psilocybin | 2016 | Questionnaire development and validation | |
| Psychedelics and Mental Health: A Population Study Adult population in the United States | 2013 | Cross-sectional survey | n = 130,152 |
| Microdosing psychedelics: Motivations, subjective effects and harm reduction People aged 16 years or older who had used psychedelics and could comprehend written... | 2019 | Cross-sectional survey | n = 525 |
| People of color in North America report improvements in racial trauma and mental health symptoms following psychedelic experiences Black, Indigenous, and people of color (BIPOC) in the US and Canada | 2020 | Cross-sectional survey | n = 313 |
| Naturalistic psilocybin use is associated with persisting improvements in mental health and wellbeing: results from a prospective, longitudinal survey Adults planning to take psilocybin outside clinical research, primarily... | 2023 | Prospective longitudinal survey | n = 2,833 |