Table of Contents Introduction What Is Diabetes Mellitus? What Are the Types of Diabetes? Diagnosing Diabetes Forms of Prediabetes Scope and Impact of Diabetes Who Gets Diabetes? Information on Diabetes Treatment Information on Diabetes Research Keeping on Top of Your Condition

Prediabetes

People with prediabetes, a state between "normal" and "diabetes," are at risk for developing diabetes, heart attacks, and strokes. About 16 million people ages 40 to 74 in the United States have prediabetes. There are two forms of prediabetes.

Impaired Fasting Glucose
A person has impaired fasting glucose (IFG) when fasting plasma glucose is 110 to 125 mg/dL. This level is higher than normal but less than the level indicating a diagnosis of diabetes.

Impaired Glucose Tolerance
Impaired glucose tolerance (IGT) means that blood glucose during the oral glucose tolerance test is higher than normal but not high enough for a diagnosis of diabetes. IGT is diagnosed when the glucose level is 141 to 199 mg/dL 2 hours after a person is given a drink containing 75 grams of glucose.