Partially Confirmed
Endogenous DMT is produced by the pineal gland and mediates mystical states, near-death experiences, and deep sleep.
Claim source
True Hallucinations; Strassman, DMT: The Spirit MoleculeCurrent evidence · confidence: medium
CONFIRMED: DMT is present in human blood, urine, and cerebrospinal fluid (endogenous compound). UNCONFIRMED: Pineal gland as primary production site, enzyme machinery is present, but DMT production in pharmacologically significant quantities has not been measured. UNCONFIRMED: DMT mediates near-death experiences specifically.Citation
Nichols, Pharmacological Reviews (2016); Roney-Dougal in Paranthropology Vol.2 No.2 (2011)