Birth control techniques were widely available in 19th-century Canada, despite the fact that they were illegal. Most physicians remained silent about contraception, with a small minority vocally opposed to the practice of birth control. Canadian physicians were influenced by the social, economic, legal, and political values of their time, and their support of birth control initially lagged far behind public interest and need. At later points in Canadian medical history, physicians actively supported increased access to contraceptive services, and played a significant role in the legalization of contraception in this country. The Canadian birth control movement made tremendous strides in the 1930s with the dissemination of contraceptive information to the public and the opening of the first public birth control clinic. The Canadian Medical Association supported contraceptive practice as part of preventive medicine in the 1930s, and the legalization of contraception in the early and mid 1960s. Contraception was formally legalized in Canada in 1969 and has become a significant aspect of medical practice. In Canada, current medical controversies in contraception include issues of public education, advertising, contraceptive research, and the integration of contraception with other aspects of reproductive and sexual health in medical practice.