In a move similar to the redefinion of "overweight" from a BMI of 27 to 25, the American Diabetes Association's "Expert Committee" redefined the condition commonly known as "pre-diabetes" from a fasting plasma glucose of 110 mg/dL to 100 mg/dL. The resulting change dramatically increased the number of Americans considered to have pre-diabetes, also know as impaired fasting glucose (IFG) or impaired glucose tolerance (IGT). Commenting on the decision, Doctors David L. Schringer and Brett Lorber wrote:
"The important point is that the Expert Committee's recommendation is not based on the logical analysis of good quality evidence regarding patient outcomes. It is not 'evidence-based.' It is conjecture and opinion."A "position statement" from the American Diabetes Association concurs that "pre-diabetes" is not a disease:
Patients with IFG and/or IGT are now referred to as having 'pre-diabetes' indicating the relatively high risk of development of diabetes in these patients. In the absence of pregnancy, IFG and IGT are not clinical entities in their own right but rather risk factors for future diabetes as well as cardiovascular disease."Case Western's Ernsberger adds:
A fasting glucose between 100 and 125 mg/dL or a postmeal glucose between 140 and 199 mg/dL is called 'prediabetes.' This predisease description is not meaningful and is not harmful by itself. It does not mean that one is fated to become diabetic, just that one is at higher risk. This description is the source of a lot of confusion, and many people are convinced that they have diabetes when they are only in this borderline area. This is important because most of the studies of diabetes incidence and risk factors are based on people's own report that they are diabetic rather than actual blood glucose numbers."