DASH clinical evidence from PubMed


Dietary Approaches to Stop Hypertension


The following list compiles key clinical evidence from PubMed (primarily randomized controlled trials, systematic reviews, and meta-analyses) regarding the clinical benefits of the DASH (Dietary Approaches to Stop Hypertension) diet.

I. Primary Indication: Hypertension (High Blood Pressure)

The DASH diet was originally developed and rigorously tested specifically for its effect on blood pressure.

Study Type Key Finding PubMed ID (PMID) Original RCT (DASH Trial) A diet rich in fruits, vegetables, and low-fat dairy, and reduced in saturated/total fat (the "combination diet"), significantly lowered systolic BP by 5.5 mmHg and diastolic BP by 3.0 mmHg compared to the control diet. Effects were even stronger in hypertensive subjects.
PMID: 9099655

Meta-Analysis The DASH diet resulted in a significant pooled decrease in systolic BP of -3.2 mmHg and diastolic BP of -2.5 mmHg in adults, both with and without hypertension.
PMID: 32330233

DASH-Sodium Study Combining the DASH diet with sodium restriction (1,500 mg/day) resulted in the greatest reduction in blood pressure compared to either intervention alone. (Reference in a review, e.g.) PMID: 40326569

II. Cardiovascular Risk Factors The beneficial effects of the DASH diet extend beyond blood pressure to other major cardiovascular risk factors. Study Type Key Finding PubMed ID (PMID) Systematic Review & Meta-Analysis The DASH diet led to significant decreases in:

  • Total Cholesterol (-0.20 mmol/L)
  • LDL Cholesterol (Though sometimes inconsistent, often shows a decrease)
  • Triglycerides
This overall change predicted a reduction of approximately 13% in the 10-year Framingham risk score for CVD. PMID: 25430608

Umbrella Review Adherence to the DASH pattern was associated with a decreased incidence of:

  • Cardiovascular Disease (RR, 0.80)
  • Coronary Heart Disease (RR, 0.79)
  • Stroke (RR, 0.81)
PMCID: PMC6413235

III. Metabolic Health and Diabetes The high fiber and low refined-sugar content of the DASH diet have shown benefits for metabolic regulation. Study Type Key Finding PubMed ID (PMID) Systematic Review & Dose-Response Meta-Analysis High adherence to the DASH diet was significantly associated with a reduced risk of developing Diabetes Mellitus (RR: 0.82). PMID: 38816664

Review on Insulin Sensitivity The DASH eating plan alone lowers blood pressure in overweight individuals, but significant improvements in insulin sensitivity are observed when it is combined with a comprehensive lifestyle modification program (including weight loss and exercise). PMCID: PMC3767170

RCTs in Diabetics Randomized trials in individuals with type 2 diabetes have documented that the DASH dietary pattern leads to a significant blood pressure reduction compared to a control diet. PMCID: PMC7810162

  1. Hypertension (Blood Pressure Reduction) Study Title & Description Link (PMID) A clinical trial of the effects of dietary patterns on blood pressure. (The Original DASH Trial) PMID: 9099655

Dietary Approaches to Stop Hypertension (DASH) Diet and Blood Pressure Reduction in Adults with and without Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. PMID: 32330233 THE EFFECTS OF THE DASH DIET AND SODIUM REDUCTION ON BLOOD PRESSURE IN PERSONS WITH DIABETES (Review confirming BP effects in diabetic patients)
PMCID: PMC7810162

  1. Cardiovascular Risk Factors & Outcomes Study Title & Description Link (PMID/PMCID) Effects of the Dietary Approach to Stop Hypertension (DASH) diet on cardiovascular risk factors: a systematic review and meta-analysis. (Focus on Cholesterol, Triglycerides, and Framingham Risk Score)
    PMID: 25430608

DASH Dietary Pattern and Cardiometabolic Outcomes: An Umbrella Review of Systematic Reviews and Meta-Analyses. (Associated with reduced incidence of CVD, CHD, and Stroke)
PMCID: PMC6413235

  1. Metabolic Health & Diabetes Study Title & Description Link (PMID/PMCID) Adherence to the dietary approaches to stop hypertension diet reduces the risk of diabetes mellitus: a systematic review and dose-response meta-analysis. PMID: 38816664

The DASH Diet and Insulin Sensitivity (Review noting improvement in insulin sensitivity when combined with exercise/weight loss)
PMCID: PMC3767170