Heroin: The Most Dangerous Drug In today's society, heroin is considered the “hardest,”most dangerous drug. A street junkie can be found in miserable health and suffering from many illnesses and medical maladies due to their harsh lifestyles. Probably the least amount of drug addicts are heroin addicts, however the overdose rate for heroin addicts is astronomical, showing heroin can be a very dangerous drug. Many deaths related to heroin are the results of conditions arising from it's illegality rather than its toxicity. For example, the many problems addicts suffer from such as hepatitis, tetanus, pneumonia, nutrition