Abstract MP32: The Level Of Adherence To The Dietary Approaches To Stop Hypertension Diet Is Associated With The Severity Of Insulin Resistance Among Community-Dwelling Heart Failure Patients: A National Health And Nutrition Examination Survey Analysis

Abstract

Introduction: Heart failure (HF) patients are at risk of new-onset diabetes. In non-HF populations, adherence to the Dietary Approaches to Stop Hypertension (DASH) diet has shown to be associated with the delayed onset of insulin resistance; however, such effect remains unknown in HF patients without history of diabetes. Methods: Using data from 1999-2016 National Health and Nutrition Examination Survey cycles, we included 348 HF participants (20+ years) without history of diabetes or diabetes medication use and with data on at least one 24-hour dietary recall. Participants were classified by DASH dietary index score quartiles: quartile 1 indicated lowest DASH index scores and lowest DASH adherence, whereas quartile 4 indicated highest DASH index scores and highest DASH adherence. The severity of insulin resistance was examined using the Homeostatic Model Assessment of Insulin Resistance and was further classified by tertiles, where the upper tertile showed the most severe insulin resistance. Associations between the severity of insulin resistance and DASH dietary adherence and its linear trends were examined using logistic regression models. Results: Participants had a mean age of 65±1 (SE) years, 44.2% were female, and 10.5% were non-Hispanic black. The age-, gender-, and race/ethnicity-adjusted odds ratio for the most severe insulin resistance group in participants with highest DASH adherence was 0.32 (95% CI, 0.11-0.99), compared to participants with lowest DASH adherence. A significant trend of more severe insulin resistance was observed as participants showed less adherence to the DASH diet (p=0.02). Conclusion: Adherence to a DASH dietary pattern was associated with improved insulin resistance among community-dwelling HF patients in the U.S. Heart healthy dietary patterns may protect HF patients against new-onset diabetes. Future research is needed to test dietary interventions aimed at the prevention of HF complications and comorbidities.