A large analysis found that people with untreated or uncontrolled hypertension who most closely followed the DASH diet had lower risks of heart disease and death.
By yourNEWS Media Newsroom
The DASH diet may offer the strongest dietary protection for people with untreated or uncontrolled high blood pressure, according to a large study that compared several popular eating patterns in more than 83,000 participants.
The analysis, published in The Journal of Nutrition, examined 83,248 UK Biobank participants with high blood pressure and tracked their dietary habits against cardiovascular outcomes across 1.2 million person-years. Researchers found that participants who most closely followed the DASH diet had a 15% lower risk of heart disease and a 22% lower risk of death from all causes compared with those who followed it least.
The findings are significant because hypertension affects nearly half of American adults, and many patients either remain untreated or continue to have blood pressure above recommended levels. The study provides new evidence that the DASH diet may be particularly effective for that group.
DASH, short for Dietary Approaches to Stop Hypertension, was developed through National Institutes of Health-funded research in the 1990s. Earlier trials found that the diet could lower blood pressure in hypertensive patients without requiring weight loss or sodium restriction. In some patients, those reductions were comparable to the effects of a single blood pressure medication.
The new study expands that evidence by comparing DASH against four other eating patterns in a large real-world population. Researchers evaluated participants’ diets using five scoring systems: DASH, the Alternative Healthy Eating Index-2010, the Alternate Mediterranean Diet, a Plant-Based Diet Index and the Empirical Dietary Inflammatory Pattern.
DASH produced the strongest results for people with untreated or uncontrolled hypertension. Its advantage appears to come from its targeted nutrient profile, which directly addresses the physical mechanisms involved in blood pressure regulation.
The diet emphasizes foods rich in potassium, calcium and magnesium, three minerals that help regulate blood pressure. Potassium helps blood vessels relax and supports sodium excretion. Calcium contributes to healthy vessel contraction. Magnesium supports blood flow and may reduce inflammation.
DASH also limits sodium, a key distinction from some other heart-healthy diets. The standard version caps sodium at 2,300 milligrams per day, while a lower-sodium version sets the target at 1,500 milligrams per day.
Research has shown that combining DASH with lower sodium intake can produce clinically meaningful blood pressure reductions. In people with hypertension, that combination has been linked to reductions in systolic blood pressure of more than 11 mm Hg.
The diet is built around fruits, vegetables, whole grains, low-fat dairy, lean proteins, nuts, seeds and legumes. For a 2,000-calorie daily intake, DASH generally includes 6 to 8 servings of grains, 4 to 5 servings each of fruits and vegetables, 2 to 3 servings of low-fat dairy and 6 or fewer ounces of lean meat. Nuts, seeds and legumes are recommended several times per week, while added sugars are limited.
The study also found that anti-inflammatory eating patterns were associated with meaningful benefits. The Empirical Dietary Inflammatory Pattern was the only other dietary approach, alongside DASH, linked to lower heart disease risk and lower mortality.
Anti-inflammatory diets typically emphasize leafy greens, fruits, whole grains and omega-3-rich foods while limiting processed meats and refined carbohydrates. The findings suggest that reducing inflammation may be one reason DASH performed well.
Researchers said DASH may protect the cardiovascular system through two overlapping pathways: direct blood pressure reduction through sodium control and mineral balance, and broader cardiovascular support through reduced inflammation.
One unexpected finding was that the Mediterranean diet did not significantly reduce heart disease risk in this specific group of participants with untreated or uncontrolled hypertension.
The Mediterranean diet is widely considered heart-healthy and has shown benefits in general populations. However, the new analysis suggests that for people specifically managing high blood pressure, its lack of targeted sodium restriction and less precise emphasis on potassium, calcium and magnesium may matter.
The result does not mean the Mediterranean diet is unhealthy. Rather, it suggests that diet recommendations may need to be more specific for people with uncontrolled hypertension.
The study’s findings reinforce DASH as a leading dietary strategy for blood pressure management. Unlike many specialized eating plans, DASH does not require supplements or expensive specialty foods. Its structure relies on widely available foods and measurable targets.
For patients with high blood pressure, the practical approach is straightforward: increase fruits, vegetables, whole grains, low-fat dairy, beans, nuts and lean proteins while reducing sodium, added sugars and highly processed foods.
The study provides strong evidence that diet can meaningfully affect long-term cardiovascular outcomes in people at elevated risk.
For patients with untreated or uncontrolled hypertension, DASH’s 15% lower heart disease risk and 22% lower mortality risk make it one of the clearest lifestyle-based options for supporting blood pressure control and long-term heart health.
Source: Natural News
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