If you are diabetic, this might be a real menace to your feet. For instance, diabetes could mean reduced flow of blood to your feet, depriving them of nutrients and oxygen. This could mean even double trouble for the cuts or sores in your feet to heal. If nerves are damaged, your feet might be numb. Imagine not being able to feel blisters or cuts in your feet, don't you think you might be more vulnerable to infections and sores?