Over time, diabetes can affect many parts of your body. One of those is the vagus nerve, which controls how quickly your stomach empties. When it's damaged, your digestion slows down and food stays in your body longer than it should.
For most people, a bad shoe day means a blistered heel or painful arch that goes away quickly. But for people with diabetes, poor footwear can trigger serious problems, such as foot ulcers, infections, and even amputation.
Foot problems aren't inevitable, though. Ralph Guanci learned the hard way to pick his shoes with care and to stick with wearing them because they're good medicine for his feet.
Guanci, 57, a businessman in Carlisle, Massachusetts, was diagnosed with type 2 diabetes 25 years...