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Impaired fasting glucose (IFG), more commonly known as pre-diabetes refers to a condition in which the fasting blood glucose level is consistently elevated above what is considered normal levels; however, it is not high enough to be diagnosed as diabetes mellitus. This pre-diabetic state is associated with insulin resistance and increased risk of cardiovascular pathology, although of lesser risk than impaired glucose tolerance (IGT). IFG can progress to type 2 diabetes mellitus if lifestyle changes are not made. There is a 50% risk over 10 years of progressing to overt diabetes. A recent study cited the average time for progression as less than three years. Fasting blood glucose levels are in a continuum within a given population, with higher fasting glucose levels corresponding to a higher risk for complications caused by the high glucose levels. Impaired fasting glucose is defined as a fasting glucose that is higher than the upper limit of normal, but not high enough to be classified as diabetes mellitus. Some patients with impaired fasting glucose can also be diagnosed with impaired glucose tolerance, but many have normal responses to a glucose tolerance test. ==Signs and Symptoms== The World Health Organization (WHO) criteria for impaired fasting glucose differ from the American Diabetes Association (ADA) criteria, because the normal range of glucose is defined differently. The WHO has defined the upper limit of normal at under 110 mg/dL (plasma). However, fasting glucose levels 100 mg/dL (plasma) and higher have been shown to increase complication rates significantly , and the ADA has lowered the upper limit of normal accordingly, to a fasting glucose under 100 mg/dL (plasma). * WHO criteria: fasting plasma glucose level from 6.1 mmol/l (110 mg/dL) to 6.9 mmol/l (125 mg/dL).〔.〕〔http://www.diabetes.co.uk/impaired-fasting-glycemia.html〕 * ADA criteria: fasting plasma glucose level from 5.6 mmol/L (100 mg/dL) to 6.9 mmol/L (125 mg/dL). Sudden sweating, confusion, thirst, hunger, heart palpitations, impaired speech, difficulty focusing - these are just a few symptoms and are not just limited to these. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Impaired fasting glucose」の詳細全文を読む スポンサード リンク
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