Marijuana is by far the most commonly used illegal drug in the

United States and in most other countries as well. More than sev-

enty million Americans have tried marijuana, and more than twenty

million have smoked it in the last year. The use of marijuana may

decrease in years to come, as may the use of alcohol, tobacco, caf-

feine, and drugs such as Valium and Prozac. But the use of mari-

juana, like the use of these other psychoactive drugs, is here to stay.

Marijuana Myths, Marijuana Fcts provides reliable information

about marijuana s effects on people. This book is for everyone inter-

ested in the drug itself, and for cveryone concerned about people

who use it. It is for parents and adolescents, for school cotmsdors

and police officers, for drug treatmentpecialists and drug policy

reformers. It is for people who love marijuana and people who hate

it.

It seems obvious that marijuana policies, and the personal deci-

sions people make about the use of marijuana, should be based on

scientific evidence, factual information, and common sense. Un-