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Beneficial Effects of a Dietary Approaches to Stop Hypertension Eating Plan on Features of the Metabolic Syndrome

From the Endocrine Research Center, Shaheed Beheshti University of Medical Sciences, Tehran, Iran

Address correspondence and reprint requests to Fereidoun Azizi, MD, Endocrine Research Center, Shaheed Beheshti University of Medical Sciences, P.O. Box 19395-4763, Tehran, Iran. E-mail: azizi{at}erc.ac.ir

OBJECTIVE—To determine the effects of a Dietary Approaches to Stop Hypertension (DASH) eating plan on metabolic risks in patients with the metabolic syndrome.

RESEARCH DESIGN AND METHODS—This was a randomized controlled outpatient trial conducted on 116 patients with the metabolic syndrome. Three diets were prescribed for 6 months: a control diet, a weight-reducing diet emphasizing healthy food choices, and the DASH diet with reduced calories and increased consumption of fruit, vegetables, low-fat dairy, and whole grains and lower in saturated fat, total fat, and cholesterol and restricted to 2,400 mg Na. The main outcome measures were the components of the metabolic syndrome.

RESULTS—Relative to the control diet, the DASH diet resulted in higher HDL cholesterol (7 and 10 mg/dl), lower triglycerides (–18 and –14 mg/dl), systolic blood pressure (SBP) (–12 and –11 mmHg), diastolic blood pressure (–6 and –7 mmHg), weight (–16 and –14 kg), fasting blood glucose (FBG) (–15 and –8 mg/dl), and weight (–16 and –15 kg), among men and women, respectively (all P < 0.001). The net reduction in triglycerides (–17 and –18 mg/dl), SBP (–11 and –11 mmHg), diastolic blood pressure (–5 and –6 mmHg), and FBG (–4 and –6 mg/dl), weight (–16 and –15 kg), and increase in HDL (5 and 10 mg/dl) among men and women, respectively, was higher in the DASH group (all P < 0.05). The weight-reducing diet resulted in significant change in triglycerides (–13 and –10 mg/dl), SBP (–6 and –6 mmHg), and weight (–13 and –12 kg) among men and women, respectively (all P < 0.05).

CONCLUSIONS—The DASH diet can likely reduce most of the metabolic risks in both men and women; the related mechanisms need further study.

Abbreviations: DASH, Dietary Approaches to Stop Hypertension • DBP, diastolic blood pressure • SBP, systolic blood pressure • TLGS, Tehran Lipid and Glucose Study

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A Diet Higher in Fruits, Vegetables, and Whole Grains Can Help Prevent Symptoms of the Metabolic Syndrome

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