Diabetes is a very common, insidious disease that affects not only women but also men and children. Initial research into the development of this disease focused on the clusters of the pancreas - the islands of Langerhans. Today, we know that one hormone, specifically testosterone, may be responsible for the development of type 2 diabetes in men. What is the relationship between low testosterone levels in men and the development of type 2 diabetes? How does testosterone regulate blood sugar levels?