Key brain DMT theory takes a hit: Rat study finds no detectable DMT in serotonin neurons
Medical Xpress
February 17, 2026
For decades, the idea that the human brain might naturally produce the psychedelic compound DMT has attracted considerable attention. It has been speculated that DMT could function as a natural signaling substance in the brain—possibly as a co-transmitter alongside serotonin.
Verticals
healthmedical
Originally published on Medical Xpress on 2/17/2026