Johnny Stack died by suicide after delusion from THC psychosis. Now saving our youth from the harms of THC products. Posts by mom @laurastack. #THCFree Johnny's Ambassadors educate parents, teens, and communities about the dangers of today's potent THC products (marijuana, dabs, vapes, edibles) on adolescent brain development, psychosis, and suicide. Our Vision is to dramatically decrease the incidence of adolescent substance abuse, mental illness, and suicide, to allow our youth to live productive, happy lives.