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Adherence to a DASH-Style Diet in Relation to Stroke: A Case-Control Study
Mahdieh Niknam1, Mohammad Saadatnia2, Forough Shakeri3
1a Food Security Research Center, Isfahan University of Medical Sciences , Isfahan , IRAN.
Journal of the American College of Nutrition
|April 1, 2015
Summary
Adhering to the Dietary Approaches to Stop Hypertension (DASH) diet was linked to a lower stroke risk in Iran. This association appeared dependent on maintaining a healthy body mass index (BMI).
Area of Science:
- Cardiovascular Health
- Nutritional Epidemiology
- Public Health
Background:
- Limited data exist on dietary patterns and stroke in developing countries.
- Western studies show associations between diet and stroke.
- This study addresses the data gap in Iran.
Purpose of the Study:
- To investigate the association between adherence to the DASH diet and stroke risk in the Iranian population.
- To assess if the DASH diet influences stroke prevalence.
- To explore dietary factors in stroke prevention.
Main Methods:
- A hospital-based case-control study in Isfahan, Iran.
- Included 194 stroke patients and 194 controls.
- Dietary intake assessed using a validated food frequency questionnaire (FFQ).
- DASH diet score constructed based on recommended food groups and nutrients.
Main Results:
- Higher adherence to the DASH diet was inversely associated with stroke risk (OR: 0.52).
- This association remained significant after adjusting for confounders like physical activity, smoking, hypertension, and diabetes.
- The protective association disappeared after adjusting for BMI, suggesting an obesity-dependent effect.
Conclusions:
- An inverse relationship exists between a DASH-style diet and stroke prevalence in the studied population.
- The findings suggest a potential role for the DASH diet in stroke prevention.
- Further prospective studies are recommended to confirm these findings.
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