Psilocybin reduces cocaine addiction in animal models
The active compound in magic mushrooms reduces cocaine-seeking behaviour in animal models. That alone is notable.
Psilocybin is already being studied for depression and post-traumatic stress disorder. Now the study published in Science shows that the compound also reduces cocaine sensitivity in animal models. The researchers attribute this to changes in how brain cells process signals through specific receptors (serotonin receptor type 2A).
Addiction and aging are closely linked. Chronic substance use accelerates cellular damage, inflammation, and deterioration of brain tissue. People with long-term addictions are often biologically older than their calendar age. Treatments that reduce addictive behaviour therefore carry potential relevance for slowing aging in this population.
How psilocybin acts on the brain
Psilocybin binds to the same receptors as serotonin. At higher doses it temporarily disrupts the boundary between sensory input and internal thought. At lower doses, as used in some therapeutic protocols, effects are subtler. It appears to temporarily increase the brain’s flexibility in revising established behavioural patterns.
In the cocaine study, this effect was measured as reduced drug-seeking behaviour following psilocybin exposure. Whether this mechanism translates directly to humans remains unclear. Clinical trials are underway but remain in early phases.
Broader implications for brain aging
Brain regions involved in reward processing and addictive behaviour, including the prefrontal cortex and striatum, also age. They lose connections and respond more slowly over time. Therapies that reactivate or increase flexibility in those regions are being examined as potential approaches to cognitive aging. Psilocybin sits at an early stage of that research landscape, but the field is growing quickly.
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