Astronaut Suzanna Randall is one of the two first German women to go into space in 2021 on a research mission of the ISS. On board of the ISS, scientists carry out medical self-tests to gain important insights for medicine on the ground. As these scientists from Germany have all been male until now, men benefit disproportionately more from medical research in space – because in many aspects, there are significant medical differences between men and women, e.g. with regard to the visual organs, the vestibular system, bones and hormones. In Germany, there are no research results from medical self-experiments on the female body in space yet. However, medical research in space could provide significant insights into women’s medicine on the ground, from which millions of women would benefit.