In 1900, the world population was less than 1.7 billion people; the Un
ited Nations projects that in 2000 it will be 6.2, and in 2020, 7.9 bi
llion. The proportion of the elderly (65 years and over), will increas
e from 5.1% (1950) to 6.8% by the year 2000 and to 8.8% by 2020, when
out of an elderly population of 796 million people, 124 million are pr
ojected to be 80 years and over. Due to an increasing gender inequalit
y in life expectation, the majority of the elderly will be women. An a
ged population is a basically new feature in the history of humanity,
the implications of which are - as yet - incompletely understood. It i
s clear, however, that the last years of life are accompanied by an in
crease in disability and sickness, with very high demands for health a
nd social services. Hence, the soaring elderly population will raise m
ajor social, economic and ethical issues worldwide and may strain to t
he limit the ability of health, social and economic infrastructures of
many countries. It may also result in an increasingly large proportio
n of humanity (the elderly in general and elderly women, in particular
) living in absolute poverty. The demographic, health, socioeconomic a
nd ethical dimensions of the problem are discussed with particular emp
hasis on the situation of elderly women and a plea is made for greatly
increased medical and socioeconomic research. (C) 1997 International
Federation of Gynecology and Obstetrics.