A review of body psychotherapy research finds there is a small but growing empirical evidence base about the outcomes of body psychotherapy, however it is weakened by the fragmentation of the field into different branches and schools. The review reports that one of the strongest studies is longitudinal (2 year) outcome research conducted with 342 participants across 8 different schools (Hakomi Experiental Psychology, Unitive Body Psychotherapy, Biodynamic Psychology, Bioenergetic Analysis, Client-Centred Verbal and Body Psychotherapy, Integrative Body Psychotherapy, Body-Oriented Psychotherapy, and Biosynthesis). Overall efficacy was demonstrated in symptom reduction, however the study design limited further substantive conclusions.