[The effect of oral contraception on society].

Oral contraception was introduced 40 years ago. In the Netherlands 'the pill' was more widely accepted than in most other countries. Oral contraception turned family planning into a medical responsibility, which made it respectable. It also separated sexuality from reproduction, which had rather far-reaching consequences for sexual behaviour and experience, as well as for sexual morality. The most important immediate impact of the pill was a sudden acceleration of the downward trend of the birth rate, and a substantial reduction in the number of unwanted pregnancies and so-called forced marriages. Its impact on world population growth has been less marked, mainly because of its costs, as on a global level sterilization and intrauterine devices are more important methods of contraception. The number of abortions in the Netherlands (5-6.5/1000 fertile women/year) has not decreased, but the current possibilities for family planning have led to a change in motivation from 'utterly unwanted pregnancy' to 'unintended pregnancy'.