Impact of Internalized Weight Bias on Quality of Life in Pre-Bariatric Surgery Patients

Overview

This study explores how internalized weight bias (WBI) affects health-related quality of life (HRQoL) in patients awaiting bariatric surgery, focusing on the mediating roles of self-esteem and mental health. Findings highlight that WBI negatively impacts both physical and mental HRQoL, with self-esteem and psychological distress serving as key mediators.

Background

Obesity is a global epidemic with bariatric surgery as an established treatment. Patients with obesity often experience poorer health-related quality of life (HRQoL), influenced not only by physical health but also by social stigma and internalized weight bias (WBI). WBI involves internalizing negative weight stereotypes, which can exacerbate psychological distress and reduce self-esteem. Understanding the psychological mechanisms linking WBI to HRQoL in bariatric surgery candidates is critical for improving treatment outcomes.

Data Highlights

Participants: 246 pre-bariatric surgery candidates aged 16-65 years with BMI ≥ 32.5 kg/m2 or 27.5-32.5 kg/m2 with comorbidities.
Measures:
- Weight Bias Internalization Scale-Modified (WBIS): 11 items, 7-point scale, Cronbach’s α = 0.845.
- Rosenberg Self-Esteem Scale (SES): 10 items, 4-point scale.
Data collected included demographics, anthropometrics, and psychological assessments.

Key Findings

• Higher levels of internalized weight bias are associated with poorer health-related quality of life in both physical and mental domains among bariatric surgery candidates.
• Self-esteem mediates the relationship between WBI and HRQoL, with lower self-esteem linked to higher WBI and reduced quality of life.
• Psychological distress, including anxiety and depression symptoms, further mediates the negative impact of WBI on HRQoL.
• Patients seeking bariatric surgery report particularly high levels of WBI compared to other populations with obesity.
• The negative effects of WBI on HRQoL extend beyond physical health damage to include significant psychological and emotional consequences.

Clinical Implications

Clinicians should assess internalized weight bias in patients preparing for bariatric surgery as it significantly affects both physical and mental quality of life. Interventions aimed at improving self-esteem and addressing psychological distress may mitigate the detrimental effects of WBI. Incorporating psychological support into preoperative care could enhance overall treatment outcomes and patient well-being.

Conclusion

Internalized weight bias substantially impairs health-related quality of life in patients prior to bariatric surgery, primarily through lowered self-esteem and increased psychological distress. Addressing these mediators is essential for optimizing patient care and surgical outcomes.

References

1. Puhl & Heuer 2010 -- The stigma of obesity: a review and update
2. Rosenberg 1965 -- Society and the adolescent self-image
3. Durso & Latner 2008 -- Understanding self-directed stigma: development of the Weight Bias Internalization Scale
4. Fabricatore et al. 2005 -- Psychological aspects of bariatric surgery
5. Tomiyama 2014 -- Weight stigma is stressful: a review of evidence for the Cyclic Obesity/Weight-Based Stigma model