Pre-diabetes is worth treating

Millions of Americans fall in between normal blood glucose levels and diabetic. Treatment, including exercise, better diet and weight loss, may prevent the full-on disease. DIAGNOSING disease is not always a black-and-white undertaking. There is often a gray zone between sickness and health -- a time when, technically speaking, people can't be classified as either diseased or well. Diabetes serves as a perfect example -- so much so that the gray zone has earned its own name: pre-diabetes.

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