Our body fat, often pointed at, is in reality indispensable to our physiological balance. Its dysfunction, whether from an excess or an insufficiency, can trigger comparable metabolic disorders, such as diabetes or heart conditions. This observation contradicts the negative image usually associated with adipose tissue.
Contrary to popular belief, fat does not constitute a simple passive reserve. It acts as a full-fledged organ, actively contributing to energy regulation and multiple fundamental bodily processes. Its action goes beyond the framework of storage, directly influencing our overall state of health.
Scientists have discovered a surprising link between adipose tissue dysfunction and metabolic diseases, showing that too much fat or too little can disrupt the body in similar ways.
Illustration image from Unsplash To delve deeper into this phenomenon, scientists have taken an interest in uncommon genetic conditions, such as familial partial lipodystrophy type 2. In these situations, fat is distributed abnormally, causing dysregulation. This method allows for the examination of underlying mechanisms without the confusion brought by external factors.
The study of murine models and patient samples allowed researchers to highlight substantial alterations linked to these diseases. These alterations hinder the ability of fat cells to store and correctly use lipids, while also provoking an inflammatory response.
The mitochondria, responsible for cellular energy production, also experience a drop in efficiency. This set of dysfunctions creates an environment where adipose tissue deteriorates and can end up atrophying. The researchers indicate that this combination of factors leads to a progressive degradation of the tissue, harming its ability to fulfill its usual functions.
When adipose tissue loses its integrity, the body struggles to manage lipids and secrete major metabolic hormones. This can lead to the emergence of pathologies like type 2 diabetes or fatty liver disease. It therefore appears that functional adipose tissue is required to avoid these complications, regardless of the amount of fat present.