The criminal activity of trafficking and illicit drug use is developing rapidly, new psychoactive substances are emerging at a rapid pace and represent a major threat to the health and safety of individuals. The actual crime in the case of trafficking and illicit drug use offence must be determined in terms of size the participants and causes. The distinction between real crime and apparent crime is defined as the "dark number or hidden figure of crime" (Rădulescu S., 1999, 189) The use of this concept is specifically used in the case of the number of crimes committed and remained unknown to the society, for various reasons. In the forensic investigation of the crime of trafficking and illicit drug use, the research activity is carried out with great difficulties, because one of the forms of crime with the highest rate of the dark number of crime and almost impossible to estimate is the illicit trafficking and consumption of drugs, as victims are most often accomplice in this form of crime, and establishing the diversity of substances that fall into the narcotic sphere is relative.
Relationship of high school and college sports participation with alcohol, tobacco, and illicit drug use: A review