Journal of Psychopharmacology
January 9, 2021
Alan K Davis, Frederick S Barrett, Sara So et al.
166 citations
A new questionnaire, the Psychological Insight Questionnaire, was developed to measure psychologically insightful experiences during psychedelic use. Among 1,661 psilocybin and LSD users, the 23-item measure showed two subscales: Avoidance and Maladaptive Patterns Insights and Goals and Adaptive Patterns Insights. Scores correlated strongly with an existing insight measure and moderately with mystical and challenging experience questionnaires. They also correlated with retrospectively reported increases in psychological flexibility, well-being, and life satisfaction attributed to a memorable psychedelic experience. The questionnaire predicted unique variance in these outcomes beyond mystical and challenging effects, suggesting it may help understand how psychological insight contributes to psychedelics' enduring effects.
The American journal of drug and alcohol abuse
January 1, 2019
Alan K Davis, Sara So, Rafael Lancelotta et al.
141 citations
Among people who used 5-MeO-DMT in a structured group setting with guided dosing and support, 80% of those previously diagnosed with depression and 79% of those previously diagnosed with anxiety reported their condition improved after use. Only 3% with depression and 2% with anxiety said their condition worsened. Greater improvement was linked to more intense mystical experiences and higher ratings of the experience's spiritual significance and personal meaning, but not to the intensity of challenging physical or psychological effects. The findings suggest potential therapeutic benefits, warranting controlled clinical trials.
Frontiers in Psychiatry
September 19, 2023
Hillary Jackson, Sara So, Abigail Yaffe et al.
87 citations
A large prospective survey of adults planning to take psilocybin outside clinical settings found that, on average, participants reported lasting reductions in anxiety, depression, and alcohol misuse, along with improvements in cognitive flexibility, emotion regulation, spiritual wellbeing, and extraversion, and decreases in neuroticism and burnout after use. However, a minority reported persisting negative effects: 11% at 2–4 weeks and 7% at 2–3 months after use, including mood fluctuations and depressive symptoms. The study included 2,833 respondents at baseline, 1,182 at 2–4 weeks, and 657 at 2–3 months post-use. Participants were primarily college-educated White men in the United States, mean age 40, who used dried psilocybin mushrooms (mean dose 3.1 grams) for self-exploration.
Scientific Reports
February 25, 2026
Albert Garcia-Romeu, Gideon P. Naudé, Alison W. Rebman et al.
2 citations
An estimated 10–20% of Lyme disease patients develop post-treatment Lyme disease (PTLD), a chronic syndrome with no established treatments. In an open-label pilot study of 20 participants with PTLD, two sessions of psilocybin (15 mg then 15 or 25 mg) with psychological support led to significant improvements in symptom burden and quality of life from enrollment through one month after the second dose, with benefits sustained at six months. At six months, general PTLD symptom burden decreased 40% from baseline, and mental and physical quality-of-life scores improved 13%. Mood, fatigue, sleep, and pain also improved. No serious adverse events occurred; common side effects were transient hypertension, headache, and tachycardia. The findings suggest psilocybin-assisted treatment is feasible and well-tolerated, warranting further research.