type, the spectrum of community health and fitness problems has some correlation with heroin supply/variety. HIV prevalence amongst injection drug people is much higher in cities with powder heroin than in cities wherever black tar heroin is endemic (Ciccarone & Bourgois, 2003). This speculation extends again towards the eighties, https://socialbuzztoday.com/story1300802/brown-powder-drugs-can-be-fun-for-anyone