Numb feet is a symptom of diabetic neuropathy, also known as nerve damage. If you have diabetes, your nerve endings can become damaged and lead to neuropathy. One of the varieties of diabetic neuropathy is peripheral neuropathy which affects peripheral parts of your body, like legs, hands and feet. As neuropathy causes you to lose your sense of touch in your peripheral limbs, especially your feet, it increases chance of injuries and infections which may lead to amputation. Unfortunately, neuropathy is not curable.
However, there are precautionary methods which can help to prevent the condition from getting worse.