can diabetes cause headache
Diabetic headaches have several causes. Photo Credit Jupiterimages/Comstock/Getty Images. Diabetes impairs your body's ability to produce or use insulin, which regulates blood glucose levels and generates energy. In type I diabetes, the pancreas does not produce insulin. Without insulin, too much sugar remains in the blood and becomes toxic, leading to fatigue, neuropathy, headaches, blindness and death if left untreated.