Charlton BM, et al. - Researchers examined sexual orientation groups for contraceptive methods used. From two longitudinal cohorts—the Nurses’ Health Study (NHS) 2 (founded in 1989, participants born 1947-1964) and NHS3 (founded in 2010, born 1965-1995)-data of 118,462 female participants were analyzed. Use of contraceptive method was least likely among lesbians of all sexual orientation groups. Compared to heterosexuals, lesbians in NHS2 had used long-acting reversible contraceptives 90% less frequently; similar results were noted for other contraceptive methods and in the NHS3 cohort. Compared to the reference group of completely heterosexual participants with no same-sex partners, use of any method of contraception was more frequent among those who were identified as completely heterosexual with same-sex partners, mostly heterosexual, or bisexual. Across sexual minority groups, striking use of long-acting reversible contraceptives (LARCs) was especially observed, and, with the exception of lesbians, these were more likely to use LARCs.