We tend to think of body fat as the enemy of metabolic health. A new study is a reminder that healthy fat is essential — and that losing the wrong fat can actually trigger diabetes.
Researchers at the University of Michigan, writing in the Journal of Clinical Investigation, studied familial partial lipodystrophy type 2 (FPLD2), a rare inherited disorder marked by abnormal fat loss and uneven fat distribution — and a high rate of diabetes.
What goes wrong
Using mice (with the lamin A/C gene switched off in fat cells) and human tissue from patients, the team watched healthy fat cells become inflamed, lose their ability to store lipids, and eventually disappear. That collapse disrupts energy storage and hormone production — the metabolic jobs fat tissue quietly performs.
“All of these effects come together to create this perfect environment for the tissue to be really unhealthy and eventually disappear,” said researcher Jessica Maung. “This is really underscoring the importance of healthy fats in keeping metabolism intact,” added Prof. Elif Oral.
Why it matters
The findings sharpen a counterintuitive point: metabolic health depends not just on how much fat you carry, but on whether that fat tissue is healthy and functional. Understanding how fat cells fail in lipodystrophy could point toward treatments for both rare fat disorders and more common metabolic disease. This is laboratory research, not medical advice.