Digital-Based Nutrition Interventions Employing the Dietary Approaches to Stop Hypertension (DASH) Diet: A Systematic Scoping Review

Abstract

Background: The Dietary Approaches to Stop Hypertension (DASH) diet is an internationally recognized anti-hypertensive dietary model. This systematic scoping review examines the effectiveness of digital-based interventions utilizing the DASH dietary pattern. Methods: A search was conducted using 14 databases to include relevant studies from 1997 to January 2025 using PRISMA guidelines for scoping reviews. Results: The review included 24 studies with almost 7000 participants, including randomized controlled trials and cohort studies conducted in several countries. Interventions using the DASH dietary pattern positively affected blood pressure (BP), nutrition behavior, and weight. Some studies also reported secondary outcomes such as reduced healthcare cost savings. Conclusion: Technology-based DASH diet interventions yielded favorable health outcomes, particularly in reducing BP and dietary salt intake, as well as improved diet quality. This systematic scoping review supports the potential of digital-based interventions utilizing the DASH dietary pattern to improve nutrition and health outcomes, particularly those related to hypertension management. The findings emphasize the importance of using evidence-based approaches, which are grounded in theoretical frameworks and models to develop effective interventions, and thoughtful program design to maximize group effectiveness. Other factors that influenced the effectiveness of the intervention included the type of technology used, as well as participant comfort with using technology. Further research and development are needed to optimize these interventions for widespread impact and long-term sustainability.