There have been a lot of diseases associated with diabetes, and it is often said that, although it is never on the death certificate, diabetes is the biggest killer. We often can think of some of the common ones, like heart failure, stroke, and kidney failure. And other conditions that worsen life, like blindness and amputations. Now we can add Obstructive Sleep Apnea to that list. This week in part 3 of our clinical text we look at how the pathophysiology of OSA relates to diabetes.