1955 - Population

Population

The U.S. Census Bureau reveals that the American population increased by 2.8 million last year, the largest 1-year advance on record.

The Soviet Union resumes legalized abortion on demand subject to certain safeguards but discourages abortion and birth control (see 1936).

The Planned Parenthood Federation of America holds conferences on abortion.

The Fifth International Conference on Planned Parenthood convenes at Tokyo and hears Gregory Pincus speak about inhibition of ovulation in women who have taken progesterone or norethynodrel, active ingredients in newly developed contraceptive pills that will soon be spoken of collectively as The Pill (see 1954). The new oral contraceptive has a failure rate of only one pregnancy per thousand women per year (see Puerto Rico study, 1957).

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