Heroin is a highly addictive substance that comes in the form of a white or brown powder or black tar. Heroin can be smoked, snorted, or injected, and it gives the user a strong sensation of euphoria. Heroin is highly addictive because of its strong effect on the brain’s reward system. Heroin addiction can be developed through recreational use or other factors such as stress, trauma, ... https://secondnewlife.com/heroin-addiction/