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DASH-Patterned Groceries and Effects on Blood Pressure: The GoFresh Randomized Clinical Trial.

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This summary is machine-generated.

Home-delivered DASH groceries with counseling lowered blood pressure (BP) and LDL cholesterol in Black adults. However, these health improvements were not sustained after the intervention concluded.

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Area of Science:

  • Cardiovascular Health
  • Nutritional Science
  • Public Health Interventions

Background:

  • The Dietary Approaches to Stop Hypertension (DASH) eating plan effectively lowers blood pressure (BP) in controlled settings.
  • Translating DASH's benefits to community settings through practical grocery strategies remains a challenge, particularly for Black adults in urban areas with limited access to healthy food options.

Purpose of the Study:

  • To evaluate the impact of low-sodium DASH-patterned groceries, delivered to homes, on systolic blood pressure (BP) among Black residents in Boston.
  • To compare the effectiveness of provided DASH groceries and dietitian counseling against financial incentives for self-directed grocery shopping.

Main Methods:

  • A parallel-group randomized clinical trial involving 180 Black adults in Boston with elevated systolic BP.
  • Participants received either 12 weeks of home-delivered DASH groceries with dietitian counseling or $500 stipends every 4 weeks for self-directed shopping.
  • Primary outcome was the change in systolic BP; secondary outcomes included diastolic BP, BMI, HbA1c, and LDL cholesterol. Adherence was measured by 24-hour urine sodium excretion.

Main Results:

  • The DASH-patterned grocery group experienced a significantly greater reduction in systolic BP (-5.7 mm Hg) compared to the self-directed group (-2.3 mm Hg).
  • The DASH group also showed significant reductions in diastolic BP, urine sodium levels, and LDL cholesterol.
  • No significant changes were observed in BMI or hemoglobin A1c levels. The observed benefits were not maintained 6 months post-intervention.

Conclusions:

  • Home-delivered DASH groceries combined with dietitian support can effectively lower BP and LDL cholesterol in Black adults, outperforming financial incentives alone.
  • The study highlights the potential of tailored grocery interventions but underscores the challenge of long-term adherence and maintenance of health benefits.
  • Further research is needed to develop sustainable strategies for maintaining the positive effects of dietary interventions in community settings.