Alcohol and illicit drug use has a significant impact on global health. Alc
ohol consumption is increasing worldwide, particularly in developing countr
ies and countries in transition, leading to an increasing number of health
and social problems, both acute and chronic. Illicit drug use is also incre
asing, particularly injection drug use, followed by an epidemic spread of H
IV and other bloodborne infections. Alcohol and illicit drug use are relate
d to key determinants of population health and are also an outcome of poor
health. Globalized marketing and trade, and rapid social changes and develo
pment in the absence of strong policies and investments in public health ha
ve led to an increased availability, use and problems related to alcohol an
d other substance use. Public health policies and substantial investments i
n effective prevention and treatment approaches are needed in order to redu
ce the negative impact of alcohol and other drug use at national and global
levels. Copyright (C) 2001 S. Karger AG, Basel.