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International Journal of Obesity (2021) 45:1599–1606
https://doi.org/10.1038/s41366-021-00825-2
ARTICLE
Bariatric Surgery
Changes in relationship status following bariatric surgery
Maja Bramming1●Signe S. Hviid1●Ulrik Becker1,2 ●Maja B. Jørgensen1●Søren Neermark2,3 ●Thue Bisgaard4●
Janne S. Tolstrup1
Received: 24 August 2020 / Revised: 22 February 2021 / Accepted: 13 April 2021 / Published online: 30 April 2021
© The Author(s), under exclusive licence to Springer Nature Limited 2021
Abstract
Background and objective Bariatric surgery is a major event associated with psychological changes such as improvements
in self-esteem, increased autonomy, and better self-value. Such changes could affect the patient’s interpersonal relationships;
however, little is known about the impact of bariatric surgery on changes in relationship status. In this paper, we aim to test
the hypothesis that bariatric surgery is associated with changes in interpersonal relationships such as becoming single for
those who were in a relationship or entering a relationship among those who were single before surgery.
Methods This register-based cohort study consisted of 12,493 patients undergoing bariatric surgery (95% gastric bypass)
from 2005 to 2013 and a reference group of 15,101 individuals with obesity between the age of 18–63 with a body mass
index between 32 and 60 kg/m2. Transitions between married, divorced, widowed, never-married single, and living with a
partner without being married were analyzed by Poisson regression. Additionally, the outcome was dichotomized, and
transitions between being single and being in a relationship were also analyzed. All analyses were weighted using inverse
probability of treatment weighting based on propensity scores.
Results The overall incidence rate ratio (IRR) of changing status from being single to in a relationship was 2.03 (95% CI:
1.18–2.28), and the overall IRR of changing status from being in a relationship to single was 1.66 (95% CI: 1.50–1.83).
Conclusion Bariatric surgery is associated with a higher chance of finding a partner among single individuals, and a higher
risk of separating from a partner among individuals in a relationship.
Introduction
Bariatric surgery is an effective treatment for obesity and
also for weight-related health challenges [1]. Several studies
have investigated the physical effects of bariatric surgery
and weight loss [1,2], but in recent years, there has been an
emerging interest in the psychosocial aspects of obesity and
bariatric surgery such as interpersonal relationships [3–9].
Individuals with severe obesity have reported higher levels
of relationship strain compared with thinner individuals [10]
and 47% of participants with obesity in a different study
reported experiencing critique regarding their weight from
their spouses [11]. Therefore, individuals with obesity may -
in addition to the health implications - endure difficulties
with regards to romantic relationships, an area that for many
is an essential part of life as well as a source of well-being
and happiness [12].
Qualitative studies have reported that a motivational
factor for undergoing bariatric surgery –besides obesity-
related complications and health issues –is the desire to
increase social activities, find a life partner, and have chil-
dren [5–7]. Additionally, patients generally report
improvements in self-esteem and personal body-image
following bariatric surgery [13,14], which could improve
chances of finding a new partner. Other studies have
focused on investigating the impact of bariatric surgery on
the patient´s intimate relationships, and results indicate that
patients who are married or in a relationship may experience
tension or changes in the dynamics of the relationship as a
consequence of surgery, possibly leading to separation or
divorce [3,8,15]. Only one quantitative study has inves-
tigated changes in relationship status following bariatric
*Janne S. Tolstrup
jest@sdu.dk
1National Institute of Public Health, University of Southern
Denmark, Copenhagen K, Denmark
2Gastrounit Medical Division, Copenhagen University Hospital
Hvidovre, Hvidovre, Denmark
3Center of Planning, Danish Board of Health, Copenhagen S,
Denmark
4Zealand University Hospital, Region Zealand, Køge, Denmark
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