Barbara Seaman was a writer, investigator, and advocate for female healthcare rights during the twentieth century in the United States. Seaman’s work addressed the gendered prejudice she observed in the US healthcare system and argued that women of the 1960s lacked the proper tools to make informed decisions about pregnancy care, breastfeeding, childbirth, and contraception. Seaman wrote the book The Doctor’s Case Against the Pill in 1969 to expose the dangers in prescribing and consuming high doses of estrogen in the form of birth control. Seaman’s objective was to expose what she described as pharmaceutical companies’ drive for profit over safety. Her reporting helped provide a voice to many women who lacked proper health information and helped improve the standard of healthcare that women received in the US. Through her publications and activism, Seaman brought women’s healthcare to the public’s attention and contributed to the feminist and women’s healthcare movements of the twentieth century.