This article describes how methodologies of EU-funded research within the life sciences and biomedicine have recently become more gender sensitive. This transformation is the result of the Gender Impact Assessments of the EU Fifth Framework Programme, commissioned in 2000-1. The authors assessed the research programme for life sciences, which includes a large health-related component. The new guidelines for research emphasize the need for clear terminology for concepts of sex and gender and for a distinction to be made between the two, (...) for both life sciences and health research. Attention to possible sex differences, even in preclinical research, as well as to effects of gender, will lead to more adequate research data that serve the health of both men and women. The transformation to research becoming more gender-sensitive is further discussed in the context of feminist theory on the body. Being fully aware of the fact that what is happening in bodies is mediated by particular technologies, the authors make an appeal to invest in concepts that take the living and changing body into account. (shrink)