Diabetes occurs when someone has high blood sugar for a long period of time. Sugar is what fuels our body, but when too much sugar circulates in our blood stream, it can cause serious problems. Early symptoms of diabetes include weight loss, extreme hunger, unusual thirst, and frequent urination. High blood sugar damages the small blood vessels within the body, which can lead to blurry vision, cardiovascular disease, and slow-healing wounds. Without treatment, diabetes can be fatal.?