Dennis McKenna Profile Picture
Dennis McKenna Headshot
Dennis McKenna Headshot

Dennis McKenna

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17, 1950
Paonia, CO
Birth Sign
17, 1950 (age 71)
Paonia, CO


Famous for his research in the fields of pharmacognosy and ethnopharmacology, this American scientist became a well known proponent of psychedelic medications and was one of the founders of the Heffter Research Institute.

Before Fame

After earning a botany degree from the University of Hawaii, he received a Ph.D. in the same field from the University of British Columbia and subsequently completed post-doctoral work at both Stanford University and the National Institute of Mental Health.


His research played a key role in the Aveda Corporation's development of naturally-derived skin care products.

Family Life

His famous older brother, Terence McKenna, was also a proponent of psychedelic drugs. The younger McKenna's 2012 memoir, The Brotherhood of the Screaming Abyss, details his personal relationship and professional collaboration with his brother.

Associated With

He and his brother Terence McKenna co-wrote two books: Psilocybin - Magic Mushroom Grower's Guide and The Invisible Landscape: Mind, Hallucinogens, and the I Ching.