Prediabetes, also known as "impaired glucose tolerance," is a health condition that almost always, as the name suggests, precedes type 2 diabetes. More than 50 million people in the U.S. over age 20 have prediabetes with blood sugar levels that are higher than normal, but are not high enough to be classified as diabetes. More and more, doctors are recognizing the importance of diagnosing prediabetes as treatment of the condition may prevent more serious health problems, including type 2 diabetes and heart disease. Follow the links below to find WebMD's comprehensive coverage about prediabetes, what it looks like, how to treat it, and much more.
Prediabetes (Borderline Diabetes)
Prediabetes has no symptoms, yet is usually present before a person develops type 2 diabetes. Find out if you're at risk for prediabetes.
Insulin resistance syndrome, or metabolic syndrome, increases your risk of diabetes and early heart disease. Find out more from WebMD.
Early Signs and Symptoms of Diabetes
How can you tell if you have diabetes? Symptoms can be so mild that you don't notice them. Learn how to recognize the early signs and symptoms of diabetes at WebMD.
Biguanides for Diabetes: Metformin
Metformin is a biguanide that works for type 2 diabetes and prediabetes. It helps to lower your blood sugar and your insulin resistance.
5 Steps to Stop Prediabetes
Have you or a family member just received a prediabetes diagnosis? This is a serious wake-up call, but it doesn't have to mean diabetes will develop. You can take steps to turn things around.
Ask the Expert: What Is Prediabetes?
A diabetes expert answers your questions about prediabetes.
WebMD the Magazine's By the Numbers: Prediabetes
Facts and stats on one of the country's top health conditions.
After a Prediabetes Diagnosis: How to Prevent Diabetes
WebMD offers 7 ways to prevent the onset of diabetes if you've been diagnosed with prediabetes.
Slideshows & Images
Prediabetes: You Can Turn It Around
Prediabetes can be a wake-up call. Click through to find out what you can do if you have it.
A Visual Guide to IR Syndrome
Insulin helps your cells make energy. Sometimes it stops working, and your blood sugar builds up. Find out what that does to your body and what you can do about it.