Heroin is a well-known opioid narcotic substance noted for its ability to trigger drug abuse, drug addiction and fatal drug overdoses. In recent months, this substance has reentered the public consciousness as a highly visible personal and public health danger. The federal Substance Abuse and Mental Health Services Administration tracks heroin-related statistics for all U.S. teenagers and adults through an annual venture called the National Survey on Drug Use and Health. These statistics include such things as the overall number of people who use the drug and the number of people who use it for the first time in any given year.