People who undergo metabolic bariatric surgery (MBS) not only experience weight loss, but also a notable reduction in the emotional burden of weight stigma, according to new research published in Health Psychology. The study highlights how this reduction in stigma can lead to better mental health, more regulated eating behaviors, and improved quality of life.

The research, led by Dr. Larissa A. McGarrity of the University of Utah, followed 148 patients who had MBS. All participants completed a psychological evaluation before their surgery and again between 1.5 to 3 years afterward. Using validated tools, the team assessed the degree of experienced weight stigma (EWS)—which includes negative judgments, bias, or discrimination due to one’s weight.

The findings showed a significant and meaningful improvement in EWS post-surgery, both statistically and clinically. This drop in stigma was closely tied to improvements in mental health and reductions in disordered eating patterns, as well as a lower body mass index (BMI).

“Weight loss is helpful for a whole lot of things, but that change in weight stigma may actually be the more powerful thing for mental health and quality of life over time,” said Dr. McGarrity in a statement.

The study's results emphasize that the psychological benefits of bariatric surgery may go beyond physical transformation. Regression models used in the study confirmed that both pre- and post-surgery levels of weight stigma could predict outcomes related to mental health and eating behavior—even after accounting for factors like age, gender, and initial health status.

As the conversation around obesity continues to grow, this research sheds light on the importance of addressing stigma as a key factor in patient recovery and long-term well-being. Experts say the findings could encourage healthcare providers to pay closer attention to the emotional and social challenges faced by individuals with obesity, both before and after surgery.