The science tell us that preventing or delaying tobacco and alcohol use prevents or delays the use of other drugs as well. The statistical association is strong between adolescents' use of tobacco, alcohol and other drugs. Some evidence of progression. For boys, alcohol is the precursor to marijuana and illegal drugs. For girls, tobacco smoking along with alcohol is the precursor.
Smoking creates a serious risk.
10 th graders were 3 and 7.4 times. 12 th graders 2.4 and 5 times. Smoking creates a serious habit. Smoking leads users from initial to regular use more quickly than do other means of administration. This is the case for tobacco, for marijuana, and for methamphetamine.