So it doesn't matter what you do, it's not going to work. My blood has always tested more than normal according to my doctors. This is a myth that, for all I know, may still be perpetuated by some members of the medical profession. I was even told this by the president of a state diabetes association in front of a television camera. For a variety of reasons.
High blood sugars cause damage to nerves throughout the body.
The longest nerves are affected first. These are the ones that go to the feet. Injury to the nerves that control the shape of the foot leads to a deformity with claw-like toes and a high arch. This shape pre-disposes to pressure from shoes on the knuckles of the toes, on the heel and on the bow of the foot and on the tips of the toes. Under such daily pressure, the skin can break down and form ulcerations.