 and randomly assigned half of them to receive a 12-week intervention delivered through a mental health app. The treatment is a form of talk therapy called cognitive behavioral therapy, or CBT, adapted specifically for addressing bulimia. The remaining half of the participants, the control group, did not receive any treatment. Researchers found that people in the treatment group had fewer episodes of binge eating than those in the control group. Ritu Chatterjee, NPR News.