Cold feet are a symptom of diabetes, according to MedicineNet and WebMD. Diabetes can cause reduced circulation in the feet, which can result in cold feet.
Patients with diabetes mellitus experience constant high levels of glucose in the urine and blood, which causes the blood vessels in the feet to narrow and creates a cold sensation, according to MedicineNet.
Another complication of diabetes that is caused by high blood glucose levels is neuropathy, or nerve damage, says WebMD. While poor circulation causes the feet to feel cold, nerve damage reduces the diabetic's ability to feel cold. Instead, feet feel tingly and numb.