Diabetes can cause nervous system damage over time, known as diabetic neuropathy. High blood glucose levels associated with poorly controlled diabetes contribute to injury of nerve fibers throughout the body. Both type 1 and type 2 diabetes increase the risks. There are several types of diabetic neuropathy based on which nerves are affected. https://www.zupyak.com/p/4495674/t/the-growing-concern-of-u-s-diabetic-neuropathy-insights-and-prevention