Then vs. Now comparison · thenVsNow/tnv-true-07

Dennis McKenna's Scientific Career: What La Chorrera Built

Education, not medical advice. Drafts and study material from an independent research library. Citations on this page were checked on Oct 13, 2026; claims in the body text and organizational sources are still under review. What was checked.

Then (1993), True Hallucinations

Dennis McKenna's Scientific Career: What La Chorrera Built

Terence treated Dennis as the scientific grounding of the La Chorrera expedition, the botanist who would provide the empirical anchor for the speculative cosmological work. Dennis was 19 years old at La Chorrera. Terence could not have predicted what Dennis's career would become.
partially-confirmed
Dennis McKenna went on to: PhD in botanical sciences from UBC (1984); postdoctoral research at Stanford; co-founder of the Heffter Research Institute (1993, which funded some of the earliest Johns Hopkins psilocybin research); research scientist at Aveda and Shaman Pharmaceuticals; Senior Lecturer at the University of Minnesota; co-author of the first pharmacological description of ayahuasca's MAO inhibition mechanism (McKenna et al., 1984). His ayahuasca pharmacology papers are foundational in the field. The Heffter Institute he co-founded funded Roland Griffiths's psilocybin safety study (2001), which launched the modern research renaissance. La Chorrera sent Dennis into pharmacological botany; his career built the institutional infrastructure that produced the psychedelic research renaissance.

Sources