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Is age a better predictor of weight loss one year after Gastric bypass than symptoms of disordered eating, depression, adult ADHD, and alcohol consumption?
Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.ORCID-id: 0000-0003-4570-5891
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
2014 (Engelska)Ingår i: Eating Behaviors, ISSN 1471-0153, E-ISSN 1873-7358, Vol. 15, nr 4, s. 644-647Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

INTRODUCTION:

Findings regarding psychological risk factors for low weight loss after bariatric surgery have been inconsistent. The association between gender and weight outcome is unclear while younger age has been consistently shown to be associated with better weight outcome. The aim of this study was to analyze the interactions between gender and age on the one hand and symptoms of disordered eating, depression, adult ADHD and alcohol consumption on the other hand in regard to weight loss after gastric bypass.

METHODS:

Bariatric surgery patients were recruited and asked to fill out self-report questionnaires regarding behavioral risk factors before and twelve months after surgery. Data from one hundred and twenty-nine patients were analyzed.

RESULTS:

After controlling for age, no psychological variable measured prior to surgery could predict weight loss after twelve months. After surgery, there was an interaction effect between age, gender and specific eating disorder symptoms. Specifically, loss of control over eating was a risk factor for low weight loss among older, but not among younger, female participants. Symptoms of adult ADHD were associated with elevated alcohol consumption after surgery.

DISCUSSION:

These results indicate that age and gender may moderate the effects of potential risk factors for inferior weight outcome. This interaction could potentially be one of the reasons behind the mixed findings in this field. Thus, there are important gender differences in the bariatric population that should be considered. The present study is the first to show that symptoms of adult ADHD may not be a risk factor for inferior weight loss but for alcohol risk consumption after gastric bypass.

Ort, förlag, år, upplaga, sidor
2014. Vol. 15, nr 4, s. 644-647
Nationell ämneskategori
Psykologi Psykiatri
Identifikatorer
URN: urn:nbn:se:uu:diva-226377DOI: 10.1016/j.eatbeh.2014.08.024ISI: 000345402700025PubMedID: 25260133OAI: oai:DiVA.org:uu-226377DiVA, id: diva2:725249
Tillgänglig från: 2014-06-16 Skapad: 2014-06-16 Senast uppdaterad: 2018-05-08Bibliografiskt granskad
Ingår i avhandling
1. Impulsivity, Negative Mood, and Disordered Eating in Obesity
Öppna denna publikation i ny flik eller fönster >>Impulsivity, Negative Mood, and Disordered Eating in Obesity
2014 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Bariatric surgery is a life-altering procedure that leads to substantial weight loss for most patients with obesity. Psychiatric conditions that may interfere with eating behavior and other behavioral prescriptions after surgery are common. Disordered eating is an established risk factor for inferior weight loss but the effects of negative mood and impulsivity are largely unknown. This thesis aims to investigate the prevalence of and associations between these potential risk factors and eating behavior in bariatric surgery patients.

Study I assessed the prevalence of adult Attention Deficits/Hyperactivity Disorder (ADHD) symptoms in bariatric surgery patients. Symptoms of adult ADHD were elevated compared to the normal population and associated with symptoms of disordered eating, anxiety, and depression.

Study II investigated whether treatment with Behavioral Activation (BA) could ameliorate binge eating and other symptoms of disordered eating in patients with obesity and Binge Eating Disorder. The results showed that BA was effective in increasing activity levels and improving mood but not in ameliorating binge eating in these patients.

Study III was a prospective study on disordered eating, symptoms of depression and anxiety, symptoms of adult ADHD, and alcohol risk consumption before surgery and at follow-up after 12 months. After controlling for age, no variable measured before surgery could predict weight loss after surgery. Disordered eating after surgery was associated with inferior weight loss in men and a subgroup of older female participants.

The present thesis concludes that symptoms of adult ADHD are common among bariatric surgery patients and associated with disordered eating. There is no indication that symptoms of adult ADHD are associated with short-term inferior weight loss after surgery. However, adult ADHD may be a risk factor for postsurgical alcohol abuse. The treatment study showed no direct association among activity, mood, and binge eating. BA, while effective in improving mood, was found not to be an effective treatment for BED, at least in the short group format investigated.

Ort, förlag, år, upplaga, sidor
Uppsala: Acta Universitatis Upsaliensis, 2014. s. 78
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences, ISSN 1652-9030 ; 100
Nyckelord
Obesity, Eating disorder, Depression, ADHD
Nationell ämneskategori
Psykologi
Forskningsämne
Psykologi
Identifikatorer
urn:nbn:se:uu:diva-226380 (URN)978-91-554-8993-9 (ISBN)
Disputation
2014-09-26, Betty Pettersson-salen, Blåsenhus, von Kraemers allé 1A, Uppsala, 10:15 (Svenska)
Opponent
Handledare
Tillgänglig från: 2014-09-04 Skapad: 2014-06-16 Senast uppdaterad: 2018-05-08

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Alfonsson, SvenSundbom, Magnus

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