Ключевые слова: abuse, addict, addiction, adolescence, adult, alertness, bad habit, chemical, cocaine, concepts, crack cocaine, crime, danger, death, dirty, disappointment, doping, dose, drug abuse, drug overdose, healthcare and medicine, heroin, holding, hopelessness, horizontal, human arm, human body part, human hand, human limb, injecting, lifestyles, limb body part, loneliness, men, narcotic, one person, outdoors, people, pill, poisonous, recreational drug, serbia, shooting up, substance abuse, syringe, taking medicine, teenager, unrecognizable person, vascular plants,