Prediabetes refers to individuals whose blood glucose levels are high but are not in the diabetes range (towards upper end of normal). Prediabetes is not a disease and should not be viewed as a clinical entity in its own right but rather as an increased risk for diabetes and cardiovascular disease (CVD). Prediabetes is associated with obesity (especially abdominal or visceral obesity), dyslipidemia with high triglycerides and/or low HDL cholesterol.
Normally, human bodies make the hormone insulin to control blood sugar. But in the case of prediabetes, this system doesn't work as well as it should, and they might not be able to make enough insulin after eating, or their bodies might not respond properly to the insulin.