How Does Psilocybin Rewire the Depressed Brain?
Direct Answer: A 2021 Cell Reports study found psilocybin rapidly increases dendritic spine density in the prefrontal cortex, with changes persisting for at least a month after a single dose.
What Depression Does to the Brain
Depression causes measurable structural changes: reduced dendritic density in the prefrontal cortex and hippocampus, hippocampal shrinkage (up to 20% in severe cases), overactive Default Mode Network, and amygdala hyperreactivity.
How Psilocybin Reverses These Changes
Neuroplasticity (increases dendritic spine density ~10% within 24 hours), Default Mode Network reset, amygdala recalibration, and BDNF increase promoting neuron growth.
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Does microdosing also promote neuroplasticity?
Yes. Microdosing also increases BDNF and promotes neuroplasticity, producing gradual improvements over weeks of consistent use.
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