Some researchers have documented a progression of drug use, which starts with alcohol and tobacco. For boys, alcohol use is the precursor to marijuana use and marijuana use is followed by the use of other illegal drugs. For girls, tobacco smoking along with alcohol use is the precursor to marijuana use. For 10 th graders the numbers were 3 times and 7.4 times. For 12 th graders 2.4 times and 5 times.
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. Tobacco smoking appears to be a training ground for the smoking of other drugs. According to the National Institute on Drug Abuse, teens get hooked on tobacco by the time they are 12 to 14 years old. Alcohol Non-smoking 32.3. Com Marijuana News Send a Virtual Hit Search Marijuana.