Researchers at the URV and the Pere Virgili Health Research Institute (IISPV) have discovered why people with obesity not only accumulate glycogen in their muscles and liver, like other people, but also store it in their adipocytes, the cells that make up body fat. These fat cells stop working properly, causing the individual to develop insulin resistance and, potentially, type 2 diabetes. This is the first time that this metabolic pathway has been described and it makes glycogen a new player within the pathology of obesity