What is the meaning of pre-diabetes or impaired glucose tolerance ?
"Pre" means 'before' and 'pre-diabetes' means 'before diabetes', a stage when a person's blood glucose level is higher than normal but still not in the range where it can be diagnosed as Diabetes. It is also defined as 'imparied glucose tolerance'. It's a warning sign, but still there are ways you can prevent diabetes.
Diabetes is defined as having a fasting plasma blood glucose level of 126 mg/dl or greater on two separate occasions. If diabetes symptoms exist and you have a casual blood glucose taken at any time that is equal to or greater than 200 mg/dl, and a second test shows the same high blood glucose level, then you have diabetes.
While people with a fasting plasma blood glucose in the 100-125 mg/dl range are defined as having impaired fasting glucose. If your doctor gives you an oral glucose tolerance test, and at two-hours your blood glucose is 140-199 mg/dl, you have "impaired glucose tolerance". Either of these is medical terminology for what your doctor is probably referring to when he says you have "pre-diabetes."
People diagnosed with 'pre-diabetes' are at increased risk of developing Diabetes Mellitus Type 2 and heart diseases. But the good news is that they can prevent this by doing some life style changes, moderate exercise, diet control and should check their blood glucose regularly every year or two depending upon their physician's advice.