The symptoms of diabetes can be puzzling. Even the common ones may not be present in all cases. They may come and go. And the same symptoms can be produced by other conditions. Nevertheless, there are a cluster of common circumstances that tend to mark... 

Diabetes, a disease characterized by chronic high levels of glucose in the blood, is not the major problem it once was. Prior to the end of the 19th century, it might well have been a death sentence for many. Excess glucose can have a number of ill effects,...