Using Jordan's concept of authoritative knowledge, this article descri
bes some of the ways that the prenatal care practices of a group of U.
S. women help to consolidate biomedical hegemony. We analyze the consi
derations that the women took into account when deciding whether or no
t to accept specific prenatal care recommendations as authoritative, f
ocusing on when and how they used their own ''embodied'' knowledge and
experience as a standard against which to assess the validity of clin
ical recommendations. The data provide insight into medicalization pro
cesses and the role patients themselves play in furthering biomedical
hegemony.