Prediabetes is an intermediate metabolic state between normoglycaemia and diabetes, including impaired fasting glucose (IFG), impaired glucose tolerance (IGT) and mildly raised haemoglobin A1c (HbA1c). Recent evidence has shown that individuals with prediabetes may have a higher prevalence of diabetes-associated complications than those with normal glucose levels. The risk of macrovascular and microvascular complications increases as early as in the state of prediabetes. Accumulating evidence demonstrated that prediabetes impair the physiological function and increase the risk of silent myocardial infarction, 1 stroke, 2 retinopathy, 3 cancer 4 and cognitive function. 5 Western Pacific region (including East Asia, South Asia, Northeast Asia and Southeast Asia) is the region with the most