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Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression
Published on: January 7, 2019
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Psychedelic therapy for depressive symptoms: A systematic review and meta-analysis
Kwonmok Ko1, Emma I Kopra1, Anthony J Cleare2
1Centre for Affective Disorders, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London SE5 8AF, UK.
Journal of Affective Disorders
|October 9, 2022
Summary
Psychedelic therapy, using psilocybin, ayahuasca, or LSD, shows significant short- and long-term reductions in depressive symptoms. More large-scale clinical trials are needed to confirm these promising findings for major depressive disorder.
Area of Science:
- Psychiatry and Neuroscience
- Clinical Psychology
- Pharmacology
Background:
- Investigates the therapeutic potential of psychedelic substances for Major Depressive Disorder (MDD).
- Focuses on treatment-resistant depression and distress associated with life-threatening illnesses.
- Examines the efficacy of classic psychedelics in alleviating depressive symptoms.
Approach:
- Systematic review and meta-analysis of fourteen psychedelic therapy studies.
- Included substances: psilocybin, ayahuasca, and LSD.
- Meta-analysis utilized seven randomized controlled trials to calculate standardized mean differences.
Key Points:
- Significant short- and long-term reduction in depressive symptoms observed across studies.
- Meta-analysis confirmed symptom reduction at 1-day, 1-week, and 3-5 weeks post-administration.
- Limited statistical power due to small sample sizes and data extraction challenges.
Conclusions:
- Psychedelic therapy is associated with notable reductions in depressive symptoms.
- The small number of studies and sample sizes necessitate cautious interpretation.
- Recommends further randomized clinical trials with larger, diverse samples to validate findings.
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