Context: The legal status of induced abortion helps determine the avai
lability of safe, affordable abortion services in a country, which in
turn influences rates of maternal mortality and morbidity. It is impor
tant, therefore, for health professionals to know both the current sta
tus of abortion laws worldwide and the extent to which those laws are
changing. Methods: Abortion-related laws in 152 nations and dependent
territories with populations of one million or more were reviewed, and
changes in these laws since 1985 were documented. Results: Currently,
61% of the world's people live in countries where induced abortion is
permitted either for a wide range of reasons or without restriction a
s to reason; in contrast, 25% reside in nations where abortion is gene
rally prohibited. However, even in countries with highly restrictive l
aws, induced abortion is usually permitted when the woman's life is en
dangered; in contrast, even in nations with very liberal laws, access
may be limited by gestational age restrictions, requirements that thir
d parties authorize an abortion or limitations on the types of facilit
ies that perform induced abortions. Since 1985, 19 nations have signif
icantly liberalized their abortion laws; only one country has substant
ially curtailed legal access to abortion. Conclusions: A global trend
toward liberalization of abortion laws observed before 1985 appears to
have continued in more recent years. Nevertheless, women's ability to
obtain abortion services is affected not just by the laws in force in
a particular country, but also by how these laws are interpreted, how
they are enforced and what the attitude of the medical community is t
oward abortion.