In this episode of ReWild Yourself! podcast, Dennis McKenna — an ethnopharmacologist who has studied plant hallucinogens for over forty years — explains what happens when psychedelics are in our systems and recounts some of his fascinating adventures with his brother Terence McKenna in South America hunting psilocybin mushrooms and DMT. Episode Breakdown: * What is ethnopharmacology? * Merging science and the spiritual * The spectrum of food and medicine in tribal cultures * What happens when psychedelics are in our system * Seretonin upgrades * Psychedelics bring the background to the foreground * Plant vs synthetic drugs * Adventures with his brother Terence McKenna in South America hunting mushrooms and DMT * A nutrient deficiency causing reductionist and materialistic world view