Adherence to the DASH Diet is Inversely Associated with Incidence of Type 2 Diabetes: The Insulin Resistance Atherosclerosis Study

  1. Angela D Liese, PhD, MPH (Liese{at},
  2. Michele Nichols, MS1,
  3. Xuezheng Sun, MSPH1,
  4. Ralph B D'Agostino, Jr, PhD2 and
  5. Steven M Haffner, MD3
  1. 1Department of Epidemiology and Biostatistics and Center for Research in Nutrition and Health Disparities, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
  2. 2Department of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina
  3. 3Department of Medicine, University of Texas Health Science Center at San Antonio, Texas


    Objective: The Dietary Approaches to Stop Hypertension (DASH) diet has been promoted widely, yet little is known about its impact on type 2 diabetes mellitus (T2DM).

    Research Design and Methods: We evaluated the association of DASH diet with incidence of T2DM among 862 participants of the Insulin Resistance Atherosclerosis Study who completed a 1-year food frequency questionnaire at baseline. T2DM odds ratios (OR) were estimated at tertiles (T) of the DASH score.

    Results: An inverse association was observed in Whites (T2 vs. T1: OR=0.66, 95%CI 0.29-1.48) which became significant for the most extreme contrast (T3 vs. T1: OR=0.31, 95% CI 0.13-0.75) adjusting for covariates No association was observed in Blacks or Hispanics (T2 vs. T1: OR=1.16 95%CI 0.61-2.18; T3 vs. T1 OR=1.34, 95%CI 0.70-2.58).

    Conclusion: Adherence to the DASH dietary pattern, which is rich in vegetables, fruit, and low-fat dairy products, may have the potential to prevent type 2 diabetes.


      • Received February 6, 2009.
      • Accepted May 12, 2009.