Black adults with high blood pressure (BP) who receive dietitian counseling and home deliveries of groceries aligned with the Dietary Approaches to Stop Hypertension (DASH) diet experience improvements in BP at three months, according to a study published online March 28 in Nature Medicine to coincide with the annual meeting of the American College of Cardiology, held from March 28 to 30 in New Orleans.
Stephen P. Juraschek, M.D., Ph.D., from Harvard University in Boston, and colleagues evaluated whether local groceries ordered with the assistance of a dietitian to align with the DASH diet might lower BP among Black adults who were being actively treated for hypertension and lived in communities with few grocery stores. Analysis included 173 individuals with systolic BP of 120 mm Hg to <150 mm Hg despite active hypertension treatment who were randomly assigned to 12 weeks of weekly home-delivered DASH groceries with dietitian counseling or receipt of three $500 stipends at four-week intervals.
The researchers found that mean baseline systolic BP/diastolic BP was 130.5/77.8 mm Hg. At three months, systolic BP changed by −7.0 mm Hg in the DASH groceries group and by −2.0 mm Hg in the self-directed group. Among the DASH grocery group, at three months, diastolic BP changed by −1.8 mm Hg and low-density lipoprotein cholesterol changed by −7.0 mg dL−1, compared to the self-directed grocery group. The beneficial effects of DASH grocery delivery on BP were partially maintained three months after the intervention finished.
“Everybody got to choose their own groceries for themselves and their families according to DASH principles with the assistance of a dietitian,” Juraschek said in a statement. “People were able to come up with different combinations to achieve these goals based on their food preferences.”
Older Black adults are disproportionately affected by cardiovascular disease and mortality, with nearly 60 percent of Black adults 20 and older having some form of heart disease. They face an earlier onset and more severe hypertension, as well as higher risks of stroke, heart failure, and kidney disease.
Higher CVD prevalence among Black communities is driven by a multitude of complex factors, including chronic stress, socioeconomic factors, limited access to healthcare, lack of healthy food options, and safe, walkable areas in their neighborhoods. For older Black adults, reduced vascular elasticity and polypharmacy challenges can compound these factors.
The DASH grocery program is especially relevant for Black seniors as it is a non-pharmacologic intervention that reduces medication burden and aligns with chronic disease management. The delivery program could be a low-risk, yet high-impact adjunct for aging patients.
For providers, the implications of this intervention extend beyond nutrition counseling. They point to a more integrated, patient-centered approach to managing cardiovascular risk in older Black adults.
Cardiovascular risk assessment should include routine screening for food insecurity, transportation barriers, and functional limitations — especially in patients with uncontrolled hypertension or hyperlipidemia. Many seniors face challenges that can make adherence to dietary recommendations challenging, including limited mobility, fixed incomes, and reduced access to full-service grocery stores.
For older Black patients, access to culturally relevant food options can improve engagement and adherence to dietary programs. At the same time, simplified meal preparation can address physical limitations, such as arthritis or disability. Involving family members or caregivers in nutrition planning may further enhance outcomes.
This study contributes to a growing body of research showing that when nutrition-based interventions are paired with improved access, they can produce clinically significant improvements in cardiovascular health.
For older Black adults, who already face a multitude of age-related risks and structural inequities, DASH grocery delivery may offer a more effective and patient-centered approach. By reducing barriers to healthy eating and supporting lifestyle changes, these programs have the potential to complement pharmacological interventions and improve long-term outcomes.
As healthcare continues to transition toward equity-focused and value-based care models, interventions that address patients’ medical and social needs are critical. For providers, the challenge — and opportunity — is to implement these strategies into clinical practice in ways that are accessible, culturally responsive, and sustainable.
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