Equity is a major issue for scientific and medical research insofar as it concerns not only access to careers and positions of responsibility, but also the way knowledge is produced and applied in the field of health. In this perspective, the Paris Brain Institute will host, on Thursday April 2, the 2026 edition of the Gender Equity Movement (GEM) Symposium, which this year explores an often neglected angle: how gender stereotypes, including those affecting men, shape inequalities.