RESEARCH DESIGN AND METHODS –A total of 600 subjects aged 40-60 years with impaired fasting glucose (100-125 mg/dl) were randomly selected from the Peng-Hu clinics during January 2003 and December 2003. Anthropometric, biochemical, and metabolic characteristics will be measured, including weight, height, waist circumference, oral glucose tolerance test, triglyceride, high and low density cholesterol, blood pressure and insulin resistance etc. A questionnaire interviews with subjects regarding demographic characteristics is also performed. 300 subjects will receive education of health promotion. Simultaneously, 150 subjects with normal fasting plasma glucose (<100 mg/dl) will selected for comparison.