NEW YORK -- Current trends in reproductive behavior differ sharply between regions
and should not be confused, says Population Council vice president John
Bongaarts. "In the already crowded developing world, despite plummeting
fertility rates, both the number of births and population size will keep
growing. The expected addition of several billion more people will hamper
ongoing efforts to reduce poverty and achieve sustainable development. On the
other hand, in parts of the developed world, particularly Europe and Japan,
already low fertility is causing consternation over the potential adverse
effects of an aging or declining population. This concern should not be
overblown, however, since reported fertility measures do not reflect the fact
that couples are still having about two children, they're just having them at an
older age. Fertility rates are not as low as they appear to be."
World Is Only At Mid-Point In Population Growth
Bongaarts points out in the October 16, 1998 issue of Science that contraceptive
use in the developing world, once rare, is now widespread: the average number of
births per woman has fallen by half, from the traditional six or more to near
three today. This "revolution in reproductive behavior," says Bongaarts, has
led some to speculate that "the world population explosion is over." But
instead of being near the end of the "explosion" with today's population of 5.9
billion, Bongaarts comments, "we are just past its mid-point. After a
record-breaking increase of 2 billion people over the past 25 years, the same
increase is projected over the next 25 years, and a further expansion to 10.4
billion is expected by 2100."
Large increases in population growth are expected in Africa, Asia, and Latin
America for three reasons, Bongaarts says:
- Fertility is still about 50 percent above the two-child level needed to bring
about population stabilization. With more than two surviving children per
woman, every gen
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Contact: Christina Horzepa
chorzepa@popcouncil.org
212-339-0520
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