Ayahuasca may protect the brain from stress-related damage in marmosets, with changes in neural plasticity markers linked to resilience and reduced inflammation

Ayahuasca shows potential neuroprotective effects against chronic stress in common marmosets, with findings pointing to reduced brain inflammation and support for neural plasticity. Repeated stress altered behavior and biological markers in ways associated with depression-like states, while ayahuasca treatment appeared to reverse some of those changes. Key effects included shifts in proteins tied to synaptic function, inflammatory signaling, and cellular resilience in brain regions involved in mood and cognition. The primate model matters because it is closer to human biology than standard rodent studies, which strengthens the relevance of the results while still stopping short of proving therapeutic benefit in people. Stress-related psychiatric disorders involve complex interactions between inflammation, neuroplasticity, and endocrine disruption. These results place ayahuasca within a growing line of psychedelic research focused on mechanisms beyond acute subjective effects, especially whether psychedelic compounds can promote longer-term recovery from stress-linked brain dysfunction.