Abstract

Depression, affecting over 264 million people globally, presents significant treatment challenges, often due to the limited efficacy and adverse effects of traditional antidepressants and the accessibility issues associated with psychotherapy. Recent advancements in psychedelic-assisted therapy, particularly using psilocybin, a naturally occurring compound found in “magic mushrooms”, shows promising potential for treating major depressive disorder (MDD) and treatment-resistant depression (TRD). This review explores the historical context, clinical trial outcomes, and the biological mechanisms underlying psilocybin’s effects. Clinical studies from 2016 to 2023 indicate that psilocybin, in combination with psychological support, significantly reduces depressive symptoms, with benefits lasting up to several months after a single dose treatment. The molecular action of psilocybin involves its conversion to psilocin, which interacts with serotonin receptors, notably the 5-HT2A receptor, influencing neurotransmitter systems and promoting anti-inflammatory responses and neuroplasticity. The review also discusses the safety profile of psilocybin, highlighting its low risk for dependency and minimal adverse effects compared to traditional treatments. Finally, the therapeutic advantages of psilocybin over conventional antidepressants are evaluated, emphasizing its rapid and sustained antidepressant effects, which contribute to its potential as a groundbreaking treatment for depression.

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