Abstract
The importance of addressing weight bias as a social justice issue in psychotherapy and psychology education and training is introduced. The history of the development of fat studies is briefly reviewed. Current coverage of size and sizeism in psychology is critically examined and contrasted with the increasing adoption of the medical model of “obesity.” Fat shaming in the practice of mental health professionals is examined as a barrier to clients’ physical and mental health. Alternatives to medicalized weight management and fat shaming are introduced. Models that emphasize size acceptance and resist negative embodiment are encouraged. The potential for a future that makes space for every body is assessed.