Too much sugar breaks tiny power plants in fat cells

When mice can't control how much glucose enters their cells, their fat-burning tissue doesn't work as well in the cold because the mitochondria don't have enough healthy fats in their membranes

When mice with excess glucose uptake eat a very low-carb diet, their fat-burning tissue works better in the cold because the diet changes the types of fats in their mitochondria

When too much glucose enters fat cells, they stop making the proteins needed to get and build healthy fats for mitochondria

When fat cells get too much glucose, their mitochondria become stiffer because the fats in their membranes change

When fat cells make too many saturated fats from glucose, these fats travel through the blood to other organs like the heart