title: [The short-and long term effect of multidisciplinary obesity treatment on body mass index and mental health].
abstract: BACKGROUND
  The aim of this treatment study was to evaluate both short- and long-term effects of a multidisciplinary obesity treatment. Long-term outcomes of patients receiving gastric bypass surgery in addition to behavioral obesity treatment were compared with those who did not undergo surgery.
  
  
  METHODS
  The participants were 100 patients undergoing a four week inpatient obesity treatment at the Hospital in Neskaupsstaður (Fjórðungsjúkrahúsið í Neskaupstað (FSN). After treatment was completed, 28 of these patients underwent further treatment, receiving gastric bypass surgery. All patients were followed for two years after completing the four week treatment. Body mass index (BMI), quality of life and symptoms of depression and anxiety were measured for all participants before and after treatment, and again using mailed questionnaires in a cross-sectional data collection in the summer of 2012.
  
  
  RESULTS
  Participants achieved statistically significant weight loss (median 1,85 BMI points), improved their quality of life and mental health after four week obesity treatment, and long term results remained significant. Three years after the conclusion of treatment, statistically significant weight loss was still present for patients that had not undergone gastric bypass surgery (median 2.13 BMI points), but improvements in mental health and quality of life were no longer present among subjects who did not undergo surgery. Patients who underwent gastric bypass surgery achieved greater weight loss (median 13.12 BMI points) and longer lasting improvements in mental health and quality of life.
  
  
  CONCLUSIONS
  Results show that the multidisciplinary obesity treatment is effective in reducing obesity and improving mental health and quality of life in the short term. With follow-up treatment, the weight loss is maintained for up to three years after treatment for all participants. The bypass surgery group lost more weight and showed more permanent improvements in mental health and quality of life. These results underline the necessity of providing long-term treatment in maintaining improvements when treating obesity. 1Municipal Service Centre for Miðborg and Hlíðar 2University of Iceland, 3National University Hospital of Iceland, 4East Coast Regional Hospital in Iceland, 5The Health Care Institution of South Iceland.
  
  
  BACKGROUND
  obesity, short- and long term treatment outcomes, weight loss, quality of life, mental health, interdisciplinary treatment. Correspondence: Bjarni Kristinn Gunnarsson bjarnikris@gmail.com.
authors: Bjarni Kristinn
authors: BK
authors: Gunnarsson
authors: Ingun
authors: I
authors: Hansdottir
authors: Erla
authors: E
authors: Bjornsdottir
authors: Erl Bjorg
authors: EB
authors: Birgisdottir
authors: Anna Thora
authors: AT
authors: Arnadottir
authors: Bjorn
authors: B
authors: Magnusson
mesh_terms: D001521:Behavior Therapy; D015992:Body Mass Index; D003131:Combined Modality Therapy; D003430:Cross-Sectional Studies; D015390:Gastric Bypass / Q000009:adverse effects / Q000523:psychology; D006801:Humans; D008603:Mental Health; D009765:Obesity / Q000175:diagnosis / Q000503:physiopathology / Q000523:psychology / Q000628:therapy*; D010348:Patient Care Team; D011788:Quality of Life; D012008:Recurrence; D011795:Surveys and Questionnaires; D013997:Time Factors; D016896:Treatment Outcome; D015431:Weight Loss