We talk about body fat as if it follows a simple rule: the less you have, the healthier you are. It’s an idea that shows up everywhere from fitness culture to medical advice. But when you look at what actually happens in the body, that framework begins to break down. There are cases where people with very low body fat still experience metabolic dysfunction, including insulin resistance and fatty liver disease. At the same time, other people with more body fat remain metabolically healthy.
