Longitudinal collection of psychosocial factors in adiposity surgery (Prof. Dr. Anja Hilbert)

Researchers interview patients after bariatric surgery about their eating behaviors and quality of life. The aim is to evaluate the long term therapeutic success of bariatric surgery.

This research project has been approved by the Ethics Committee of the Faculty of Medicine of the Universität Leipzig (228-12-02072012). The project is recorded in the German Clinical Trial Register (DRKS) with the number DRKS00006749.

Duration: 01.09.2011 - 30.04.2015;  Extension: 01.05.2015 - 30.04.2020


Description of research project

Bariatric surgery maximizes long-term weight loss and psychosocial functioning. However, a significant proportion of patients experience poor weight loss outcome and weight regain over time. Although there is first evidence that maladaptive eating and lifestyle behaviors (e.g., loss of control eating) or general psychopathology are associated with bariatric surgery outcome, longitudinal bariatric surgery cohorts with a long-term follow-up of a comprehensive assessment of psychosocial aspects are widely lacking. Based on the multicenter longitudinal Psychosocial Registry for Bariatric Surgery (PRAC) established in 2012, the present research project aims at extending the data record and the long-term assessments for up to 8 years following surgery. All bariatric surgery candidates at the IFB Outpatient Unit will continue to be approached for first inclusion in PRAC prior to surgery and repeated bi-annual or annual follow-up assessments. For the in-depth examination of diverse psychosocial aspects state-of-the-art interviews and self-report questionnaires are used, for example, on forms of non-normative eating behaviors, psychopathology, personality characteristics such as impulsivity, self-esteem, and experiences of weight stigma. In order to minimize attrition, extensive effort is placed on retention strategies. The overarching goal of PRAC is to elucidate the association between psychosocial factors and bariatric surgery outcome in the long-term and to allow for identification of patients at increased need for post-bariatric behavioral treatment.


Prof. Dr. Anja Hilbert (Principal Investigator)
Prof. Dr. Mathias Faßhauer
Prof. Dr. Matthias Blüher
Prof. Dr. Wieland Kieß
Prof. Dr. Arne Dietrich
Dipl.-Psych. Lisa Schäfer

Prof. Dr. Anja Hilbert

IFB-Professorship "Behavioral medicine"
Member: board of directors, internal board
Head of project

+49 341 97-15361 and -15360

anja [dot] hilbert [at] medizin [dot] uni-leipzig [dot] de

Dipl.-Psych. Lisa Schäfer