The environment hasn't changed much and only two factors are different. One is the availability of the birth control pill and the other is the fact that abortions have been made available and legal. Obviously today, there are millions of abortions every year whereas in 1960, there were very few abortions.
Society is more comfortable with blaming the oral contraceptive pills.
The finger seems to point more and more, at abortion as the culprit. In October, a contriversial set of statistics were published in the British Medical Association's journal of Epidemiology and Community Health. Dr Joel Brind, one of the four authors of the article, expressed his feelings that the link between abortion and breast cancer is clear enough that women considering abortions should be warned about this risk before they have the procedure done. Dr Brind is a professor of endocrinology at Baruch College in New York City. The authors told the news services that abortions now account for about 5000 cases of breast cancer in the United States yearly and this number could reach 25,000 by the middle of the next century.