Research variables-"sex" polarized as "females" and "males," "sexuality" polarized as "homosexuals" and "heterosexuals," and "gender" polarized as "women" and "men"-reflect unnuanced series that conventionalize bodies, sexuality, and social location. Such research designs cannot include the experiences of hermaphrodites, pseudohermaphrodites, transsexuals, transvestites, bisexuals, third genders, and gender rebels as lovers, friends, parents, workers, and sports participants. Even if the research sample is restricted to putative "normals," the use of unexamined categories of sex, sexuality, and gender will miss complex combinations of status and identity, as well as differently gendered sexual continuities and discontinuities. (Lorber, 1996, p. 144) F or more than a decade researchers such as Lorber (1996, 2005) have challenged us to carefully reconsider the ways that we use the terms gender and sex in research. Despite these challenges, health researchers, on those occasions when they have considered sex and gender in their research, have tended to rely on conceptually stagnant notions of gender and sex that contrast masculine males with feminine females. "Moving beyond the binary" involves two important elements: first, reconsidering how we have conceptualized distinctions between masculine/feminine and male/female, and second, rethinking conceptualizations of gender as strictly social and of sex as strictly biological. A serious problem faced by