DEAR DOCTOR K: I recently had some blood tests done, and my doctor told me I have "prediabetes." What does this mean? Do I have diabetes or not?
DEAR READER: Diabetes doesn't usually appear all of a sudden. Many people have a long, slow, invisible lead-in to it called prediabetes. During this period, blood sugar levels are higher than normal. However, they're not high enough to cause symptoms or to be classified as diabetes. It's still possible at this stage to prevent the slide into full-blown diabetes.