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Understanding the psychosocial impact of weight loss following bariatric surgery: a qualitative study
BMC Obesity volume 5, Article number: 38 (2018)
Bariatric surgery leads to changes in mental health, quality of life and social functioning, yet these outcomes differ among individuals. In this study, we explore patients’ psychosocial experiences following bariatric surgery and elucidate the individual-level factors that may drive variation in psychosocial outcomes.
Eleven semi-structured focus groups with Michigan Bariatric Surgery Collaborative (MBSC) patients (n = 77). Interviews were audio recorded, transcribed verbatim, and analyzed using a grounded theory approach. Data on participant demographic characteristics were abstracted from the MBSC clinical registry.
Most focus group participants were female (89%), white (64%), and married (65%). We identified three major themes: (1) change in self-perception; (2) change in perception by others; and (3) change in relationships. Each theme includes 3 sub-themes, demonstrating a range of positive and negative psychosocial experiences. For example, weight loss led to increased self-confidence among many participants while others described a loss of self-identity. Some noted improved relationships with family or friends while others experienced worsening or even loss of relationships due to perceived jealousy.
Weight loss following bariatric surgery leads to complex changes in self-perception and inter-personal relationships, which may be proximal mediators of commonly assessed mental health outcomes such as depression. Individuals considering bariatric surgery may benefit from anticipatory guidance about these diverse experiences, and post-surgical longitudinal monitoring should include evaluation for adverse psychosocial events.
The public health burden of obesity is undeniable . Within the United States, over one-third of adults live with obesity  and worldwide over six hundred million adults – 11% of men and 15% of women – live with obesity . Further, a growing number of individuals live with morbid or severe obesity (body mass index > 40 kg/m2 [4, 5]), which leads to serious health consequences and contributes significantly to obesity-related health care spending . Bariatric surgery, which includes gastric bypass, sleeve gastrectomy, and laparoscopic gastric banding, is the most effective treatment for morbid obesity [7, 8], often reducing excess weight within one year of surgery for a prolonged duration . Post-surgical weight loss predictably leads to resolution of and/or improved control over obesity-related chronic conditions such as type 2 diabetes mellitus [10, 11].
In addition to poor physical health, individuals with obesity are also more likely to experience poor mental health [12,13,14] and social dysfunction secondary to factors such as weight-related stigmatization, discrimination, and poor body image [15,16,17]. Psychosocial changes also occur following major weight loss after bariatric surgery . However, in contrast to the predictable physical health benefits of major weight loss, psychosocial outcomes differ among patients and little is known about the individual-level experiences that may contribute to these variations. For example, many individuals experience decreased depression severity and increased quality of life following bariatric surgery [19,20,21]. Yet others may experience psychological benefit only in the near-term  or not at all . Some may experience worsened mental health following weight loss surgery with several recent reports demonstrating increased rates of post-surgical self-harm, hospitalization for depression, and binge drinking behavior [24,25,26].
Poor mental health can compromise post-surgical weight loss , and psychosocial functioning is commonly assessed prior to bariatric surgery using standardized tools and a clinical interviews . However, there are no definitive guidelines for this process  and the accuracy of these assessments may be undermined by patients’ underreporting of psychological dysfunction . Following bariatric surgery, psychosocial functioning is not routinely assessed in the clinical setting. Among researchers, quantitative psychometric tools are commonly used to assess post-surgical depression severity and health-related quality of life (e.g Impact of Weight on Quality of Life, Short Form Survey 36). While these instruments can elucidate general trends and associations, they fail to capture the lived individual-level experiences that may drive variation in outcomes (e.g. increased marital discord following major weight loss [31, 32]). Hypothesized mechanisms for improved mental health include increased self-confidence, improved self-image, and better relationships as a result of major weight loss [33, 34]. Conversely, worsened mental health may be due to unrealistic pre-surgical expectations about the potential physical and mental health benefits of weight loss  or unanticipated changes in social relationships .
In this study, we conducted semi-structured focus groups with 77 US adults who underwent bariatric surgery, and we characterize the patient-level experiences that may drive differences in psychosocial outcomes after major weight loss. These data may facilitate more personalized counseling prior to bariatric surgery, and may provide patients with a more nuanced understanding of the potential psychosocial risks and benefits of bariatric surgery within the context of their individual lives. Further, these data may inform post-operative strategies to discuss, identify, and treat psychological dysfunction following weight loss surgery.
We conducted a qualitative study using semi-structured focus group interviews with patients undergoing bariatric surgery across the state of Michigan. The purpose of these focus groups was to better understand patient experiences after bariatric surgery. Focus group participants were asked to discuss changes in their lifestyle, health, psychological wellbeing, and social relationships. For this manuscript, we focused specifically on the psychological and social changes. This study was approved by the University of Michigan’s Institutional Review Board.
Participants and recruitment
Patients undergoing bariatric surgery were recruited from four hospitals affiliated with the Michigan Bariatric Surgery Collaborative (MBSC). The MBSC is a statewide clinical registry and quality improvement program in the state of Michigan, which includes more than 70,000 bariatric surgery patients. To ensure a broad range of perspectives, we purposively sampled participants based on gender and geography. MBSC site coordinators identified post-surgical patients who were then contacted by the study team by phone and email. Those who agreed to participate in the focus groups provided written informed consent and received financial compensation for their time.
Eleven focus groups were conducted between February 7, 2014 and March 28, 2014. A professionally trained moderator conducted all focus groups, which each lasted approximately one hour in duration. The semi-structured interview guide was developed in collaboration with patients, bariatric surgeons, medical weight loss specialists, nurses, dieticians, professional organizations (i.e., American Society for Metabolic and Bariatric Surgery and the Society of American Gastrointestinal and Endoscopic Surgeons), and members of a private insurance company. A summary of the focus group questions that pertained to psychosocial experiences are shown in Appendix 1.
Data were abstracted from the MBSC clinical registry for each focus group participant including age, gender, race, date of operation, procedure type (e.g. adjustable gastric band, sleeve gastrectomy, and Roux-en-y gastric bypass, or duodenal switch), marital status, education level, employment status, approximate annual income and estimate weight loss.
All focus groups were audio and video recorded and transcribed verbatim. Four members of the research team, including a bariatric surgeon (AG), a primary care physician (DG), a surgical resident (AI), and non-physician with a Master’s in Public Health (NF), independently reviewed a subset of transcripts.
Codes and definitions were generated during consensus conferences using a grounded theory approach.  Specifically, initial codes were created to reflect the main topics in the interview guide, and these were then grouped into themes and sub-themes to reflect the patterns and concepts that emerged from the data. Once the coding scheme was established, all four investigators independently coded each transcript. These investigators then met to review their coding and resolve all differences. Few new codes emerged after reviewing 4 transcripts and no new codes emerged after reviewing 8 transcripts. After 11 focus groups, we reached data saturation, and therefore did not conduct additional focus groups (Fig. 1). We counted the occurrence of each theme and sub-theme to understand their relative frequencies within our data (Appendix 2). All transcripts were coded in NVivo (QSR International), a qualitative data analysis computer software package.
Lastly, we discussed our themes and subthemes by telephone with subset of six MBSC Patient Advisors to ensure that our findings did not overlook important experiences among bariatric surgery patients. The MBSC Patient Advisory Program is a partnership between the MBSC and post-bariatric surgery patients that aims to bring the patient voice to design, operations, and advancements of the MBSC program. The Patient Advisors believed that our findings accurately represented the psychosocial experiences of individuals after bariatric surgery.
A total of 77 individuals participated in one of 11 focus groups. The mean age of all participants was 48.8 years (range 26 to 72). Most (n = 69; 89%) were female, white (n = 50; 65%), and married (n = 49; 64%). Additional participant characteristics including their post-surgical weight loss and psychiatric conditions are shown in Table 1.
Within our data, we identified 3 major themes: (1) change in self-perception (2) change in perception by others and (3) change in relationships. Within each major theme we identified three subthemes, which are described below and illustrative quotes for each are shown on Table 2. Each theme was present across each of the procedure types after the patient experience weight loss.
Change in self-perception
Participants described changes in how they saw themselves after bariatric surgery.
“When I Look in the Mirror”
Many patients reported discordance between their objective post-surgical weight and their perceived body image and identity. One patient stated, “I think for me the mind body experience is so separate. The body loses weight but the mind still stays [the same]” and another endorsed a sense of lost self-identity, stating “once I lost over 100 pounds, and looked in the mirror at myself, I didn’t know that person looking back, and that frightened me.” In several instances, participants described persistent dissatisfaction with their body image despite marked weight loss and comments from others that “you look so good.”
“I Have More Confidence”
Many individuals described increased self-confidence after weight loss, which resulted in an increased ability to engage professionally and socially. One participant noted, “I had more confidence to get a better job” and another described a general willingness to embrace new opportunities: “[Now] I don’t have any limits; I’m willing to try whatever.” Several individuals reported improved mental health, which one woman who struggled with depression for 25 years attributed to “just being more confident.”
“I Used Food to Cope”
Some participants expressed insight into the psychological factors that contributed to their pre-surgical weight. Several individuals recognized that they used food to cope with emotional distress, and after surgery, “you have to deal with the real reasons you overeat and why you mistreat your body.” Some participants sought professional counseling after bariatric surgery to develop new strategies to manage negative emotions, and one individual indicated that she worked with a therapist prior to surgery to prepare for this change.
Change in perception by others
Participants also described changes in how they interacted with and were perceived by other individuals after bariatric surgery.
“You Took The Easy Way Out”
Some participants felt that they were negatively judged for their decision to have weight loss surgery by friends, family, or co-workers. Bariatric surgery was considered to be the “easy way out” and participants were frequently told “you’re not trying hard enough [to lose weight].”
“Are You New Here?”
Many noted that they were not recognized by acquaintances after weight loss. This prompted various emotional responses among focus group participants. While some enjoyed the “actual shock reactions of people” some were saddened by the lack of recognition. One woman said, “I was really upset people who have known me all my life walked right by me.”
“I Am No Longer Invisible”
Participants experienced positive changes in how they were treated both professionally and socially, which often led to mixed sentiments. As one participant stated, “I’ve got this new life and it’s exciting, but then you also see how unfair society can be. You’re treated considerably different…people that wouldn’t even open a door for you previously are now opening doors.” Another commented that “[weight loss] is like winning the lottery; people who used to ignore you now want to be your best friend.”
Change in relationships
Patients in the focus groups discussed several important changes in their relationships following bariatric surgery.
“It made my relationship stronger”
Some noted that certain relationships strengthened following weight loss, which was often due to increased self-confidence. In other instances, focus group participants attributed this improvement to a significant other’s concomitant weight loss and their ability to partake in new activities together. One participant commented that “[my husband] lost 60 pounds and we’ve both just turned our whole lifestyle around.”
“They Didn’t Like the Change”
In contrast, many participants experienced distress in certain relationships following weight loss. This was often attributed to changes in social activities, which were previously centered around eating. Others indicated that their loved ones preferred their pre-surgical weight. For example, one participant recalled her husband stating, “she can’t get too small, doc, because that’s why I married her. I wanted her that size” and another said “I almost got divorced because I was changing so fast.”
“They’re Jealous of Me”
Finally, many participants experienced jealousy from friends and family due to weight loss. For example, one told her younger brother, “Look, I lost 39 pounds but don’t tell mom or sis because they’ll get upset because I’m dropping it so fast.” Others reported receiving increased positive social attention, which resulted in jealousy from friends.
Through focus groups with patients who underwent bariatric surgery, we characterized the complex changes in psychological and social functioning that occur following major weight loss. Participants described changes related to three major themes: (1) self-perception; (2) perception by others; and (3) social relationships. Each of these themes includes positive and negative experiences that were often interrelated and experienced simultaneously by patients. Taken together, the experiences described by our focus group participants may help to explain the differences observed in recent quantitative studies examining the psychosocial impact of weight loss after bariatric surgery.
Several of our focus group participants noted that their depressive symptoms resolved following bariatric surgery. These findings are consistent with prior literature demonstrating a decrease in the prevalence and severity of mental health conditions following bariatric surgery [38, 42] as well as improved mental health and health-related quality of life two years after bariatric surgery [19, 20, 39]. Other participants discussed positive psychosocial changes that may mediate improvements in mental health and quality of life such as increased self-confidence and improved relationships with spouses, friends, co-workers and social acquaintances. Notably, these experiences support previously hypothesized mechanisms for improved mental health following major weight loss [33, 34]. Changes in self-perception described by participants this study also help put into context recent large registry research demonstrated that a large portion of partients aftery bariatric surgery have a change in relationship status (i.e. married patients become divorces or single individuals get married.) 
While mental health commonly improves following bariatric surgery [19,20,21], some individuals never have this benefit  and others may experience worsened mental health, including increased risk of self-harm [24,25,26]. Because these prior studies use administrative data and/or quantitative assessments to measure outcomes, they cannot provide insight into the individual-level factors that may either mitigate or potentiate adverse psychosocial outcomes. Prior qualitative work provides limited insight into the live patient experience, and demonstrates that some individuals are dissatisfied with their body image following surgery [40, 41], which may be due to unrealistic pre-surgical expectations . For others, weight loss following bariatric surgery may negatively alter marital dynamics, even leading to divorce in some circumstances . Our findings substantiate and extend these prior qualitative finds among a large patient cohort. We corroborate findings that relationships with significant others may change following major weight loss , and we also provide new insight into changes that may occur in other social and professional settings.
Notably, the psychosocial experiences shared by focus group participants could not be dichotomized as “positive” or “negative” due to the complexity of lived experiences. For example, many were pleased with their objective weight loss, but simultaneously struggled with a loss of self-identity. Others described social and professional gains, but also endorsed resentment for not being treated with similar respect before weight loss. This tension between positive and negative psychosocial experiences may explain, at least in part, why positive psychosocial outcomes diminish over time for some . Future work could examine fluctuations in psychosocial experiences – perhaps in conjunction with weight loss and maintenance – to inform the development of targeted support strategies to optimize physical and mental health outcomes.
Our findings should be interpreted in the context of important limitations. First, similar to other qualitative studies, this manuscript may not be generalizable to the broader population of bariatric surgery patients. To minimize this limitation, we purposefully sampled patients throughout the state of Michigan to capture differences in various characteristics including age, gender, race, and socioeconomic status. The collaborative, while only one state, is amongst the largest collaboratives in the country with a diverse case-mix. Second, it is possible that participants with more favorable surgical outcomes participated in this voluntary study and therefore our findings may under-represent the negative psychosocial impact of bariatric surgery. However, we did reach thematic saturation with regards to negative psychosocial factors. Moreover, we reviewed our findings and conceptual model with a subset of bariatric patients to ensure important themes were not overlooked. Third, participants’ responses could have been influenced by recall or social desirability biases. We aimed to limit this bias by utilizing a trained moderator that had no association with the clinical providers within the MBSC. Finally, we did not assess patients at multiple intervals post-operatively, and their response to weight loss may have differed over time. To minimize this potential time-exposure bias, we made sure our sample included patients at multiple points along the post-operative time line. In that context, we did not notice significant thematic differences across different time points after surgery.
Our study has important implications for patients, providers, policymakers. Among patients, these findings may facilitate a more nuanced understanding of the psychosocial changes that may follow weight loss surgery. The themes identified in this study may help providers identify adverse psychosocial outcomes that may otherwise go undetected. While standardized instruments (e.g., PHQ-9) may be used to screen for common mental health conditions (e.g. depression) these measures may not reveal other psychosocial experiences (e.g. marital discord or judgment by former friends), which may contribute to general wellbeing and achieved weight loss [12, 23]. To elicit this information, providers may consider asking patients questions such as “How has your weight loss changed your relationships?” or “Has anyone judged you negatively for having weight loss surgery?” Lastly, among payers, there are opportunities to promote favorable psychosocial outcomes through reimbursement for post-surgical mental healthcare, which may include support groups, couple’s therapy, or one-on-one counseling.
Our study provides new insight into the psychosocial experience of patients following bariatric surgery. By understanding these lived experiences, providers may be better equipped to ascertain and address factors that may contribute to psychosocial dysfunction. Prior to surgery, patients and providers may engage in a more personalized discussion of potential psychosocial risks and benefits of surgery, and anticipatory guidance may be better tailored to the patient’s unique circumstances. For example, a patient whose social life revolves around dining out may be encouraged to explore alternative activities before surgery and to pre-emptively discuss this lifestyle change with friends and family. Post-operatively, bariatric surgery teams and primary care providers may more effectively elicit and address psychosocial struggles by discussing patients’ changes in self-perception and relationships with others. As rates of severe obesity and surgical treatment for the condition continue to rise, these steps are critical to optimize psychosocial functioning among patients who consider and undergo weight loss surgery.
- MBSC :
Michigan Bariatric Surgery Collaborative
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The authors would like to thank all focus group participants.
Dr. Griauzde is a research fellow and is funded by the Veterans Health Administration. Dr. Ghaferi receives research funding from the Agency for Healthcare Research and Quality (K08 HS023621; P30 HS024403) and the Patient Centered Outcomes Research Institute (CE-1304-6596). He also receives salary support from Blue Cross Blue Shield of Michigan as the Director of the Michigan Bariatric Surgery Collaborative. Rachel Ross reports funding from the Patient Centered Outcomes Research Institute.
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This study was approved by the University of Michigan Institutional Review Board. All participants signed an informed consent document.
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Griauzde, D.H., Ibrahim, A.M., Fisher, N. et al. Understanding the psychosocial impact of weight loss following bariatric surgery: a qualitative study. BMC Obes 5, 38 (2018) doi:10.1186/s40608-018-0215-3
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