Weight loss protects—even when weight is regained

The study conducted at the University of Gothenburg has revealed some interesting findings regarding weight loss and its impact on health. The research focused on individuals who had undergone weight-loss surgery and the effects of regaining some weight after significant weight loss. The study, published in The Lancet Regional Health—Europe, aimed to shed light on the health consequences of weight regain following substantial weight loss, an area that has been largely understudied.

The study included 1,346 participants from the Swedish Obese Subjects (SOS) study, which is known for its comprehensive research on the long-term effects of bariatric surgery compared to conventional obesity treatment. The participants had initially lost an average of about 30 kilograms one year after surgery, with over half of them regaining at least 20% of the weight lost during the first year.

The researchers compared two groups within the study – one group that had regained at least 20% of their initial weight loss and another group that had maintained their lower weight or gained only a small amount. The results showed that there were no differences in cancer risk and life expectancy between the two groups. However, those who had regained weight were found to be at a greater risk of microvascular disease, with a higher incidence rate compared to those who maintained their lower weight.

Similarly, cardiovascular diseases showed a similar pattern, with the group that had regained a significant amount of weight having a higher incidence rate compared to the group that maintained their lower weight. Despite these findings, the study highlighted that even individuals who regained some of their weight loss experienced long-lasting positive effects on their health and had the same life expectancy as those who maintained their lower weight.

Lead researcher Kajsa Sjöholm, an associate professor at the Department of Molecular and Clinical Medicine at Sahlgrenska Academy, emphasized the importance of providing effective support to prevent significant weight gain and the associated health risks. The study also pointed out the challenges that come with weight regain, such as reduced quality of life and stigma associated with obesity.

In conclusion, the study provides valuable insights into the long-term effects of weight loss and weight regain on health outcomes. It underscores the need for continued support and interventions to help individuals maintain a healthy weight and reduce the risk of associated health complications. The findings from this research contribute to our understanding of the complex relationship between weight loss, weight regain, and overall health.