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The prevalence of diabetes continues to soar in theUS．American adults diagnosed with diabetes havebeen markedly increased by 52.9％in less than 10years from 5.1％in 1997 to 7.8％in 2006.Such rapidrising prevalence ofdiabetes has brought seriousconsequences for the population health．The majorshifthas been seen in the leading causes of death in theUnited States during the past 3 decades．