The body’s fat tissue, often referred to as “fat,” has a surprising ability to adapt. A recent study reveals that it can truly regenerate and regain a healthy state after significant weight loss, challenging the idea of a permanent memory left by obesity.
This discovery stems from the work of researchers at the University of Southern Denmark. Published in Nature Metabolism, their research focuses on observing cellular transformations during weight loss.
After bariatric surgery (such as a gastric band) and substantial weight loss, adipose tissue samples show significant improvements. For example, the number of immune cells linked to inflammation drops significantly to levels comparable to those of thin individuals. This decrease promotes better insulin sensitivity and helps reduce metabolic risks like type 2 diabetes.
For more modest weight reductions, between 5 and 10%, scientists did not observe a significant decrease in inflammation. However, they noted a change in genetic activity that encourages the formation of new adipose cells, potentially more functional. This phenomenon could explain early clinical improvements in health, even with limited weight loss.
Among other positive changes, there is an increase in cells that form blood vessels. This adaptation enhances tissue oxygenation and nutrition, contributing to its restoration. Overall, genetic expression profiles tend to normalize, indicating a return to a state similar to that of individuals who have never experienced obesity.
These findings help understand how weight loss protects against diabetes and cardiovascular diseases. Adipose tissue demonstrates a real ability to recover, showing that the harmful consequences of obesity are not irreversible and that health restoration is possible.
