Even though there are many different treatment options for obesity, the monitoring of success is usually based on body weight and the body mass index calculated from these (body weight in relation to height). However, a change in body composition due to an increase in muscle mass can falsify the validity of these values. A visual recording of the body shape in the course of weight loss might have a positive effect on the success of the therapy, the motivation, and the body perception of the patients. The aim of the study is to investigate whether a new technique for recording body shape influences motivation and the patient's own body image during weight loss therapy. These findings are intended to improve the medical care of people with overweight or obesity in the future.