Local Food System Approaches to Address Food and Nutrition Security among Low-Income Populations: A Systematic Review.

Food and nutrition insecurity disproportionately impact low-income households in the United States, contributing to higher rates of chronic diseases among this population. Addressing this challenge is complex because of various factors affecting the availability and accessibility of nutritious food. Short value chain (SVC) models, informally known as local food systems, offer a systemic approach that aims to optimize resources and align values throughout and beyond the food supply chain. Although specific SVC interventions, such as farmers markets, have been studied individually, a comprehensive review of SVC models was pursued to evaluate their relative impact on food security, fruit and vegetable intake, diet quality, health-related markers, and barriers and facilitators to participation among low-income households. Our systematic literature search identified 37 articles representing 34 studies from 2000-2020. Quantitative, qualitative, and mixed-method studies revealed that farmers market interventions had been evaluated more extensively than other SVC models (i.e., produce prescription programs, community-supported agriculture, mobile markets, food hubs, farm stands, and farm-to-school). Fruit and vegetable intake was the most measured outcome; other outcomes were less explored or not measured at all. Qualitative insights highlighted common barriers to SVC use, such as lack of program awareness, limited accessibility, and cultural incongruence, whereas facilitators included health-promoting environments, community cohesion, financial incentives, and high-quality produce. Social marketing and dynamic nutrition education appeared to yield positive program outcomes. Financial incentives were used in many studies, warranting further investigation into optimal amounts across varying environmental contexts. SVC models are increasingly germane to national goals across the agriculture, social, and health care sectors. This review advances the understanding of key knowledge gaps related to their implementation and impact; it emphasizes the need for research to analyze SVC potential comprehensively across the rural-urban continuum and among diverse communities through long-term studies of measurable health impact and mixed-method studies investigating implementation best practices. This trial was registered at PROSPERO as CRD42020206532.

Local Value Chain Models of Healthy Food Access: A Qualitative Study of Two Approaches.

Food value chains are increasingly recognized as more equitable alternatives to traditional supply chains and may represent a novel mechanism to achieve health equity at the local level. Country Fresh Stops (CFS) and Donation Station (DS) are two complementary programs that are part of a more robust value chain designed to support local agriculture in Appalachia Ohio. As the first study of these programs in the peer-reviewed literature, the objectives were to identify factors that facilitate or hinder the implementation of these two local value chain models of healthy food access and to identify the perceived impacts from the perspective of the sites implementing them. In-depth, semi-structured interviews were conducted with CFS (n = 7) and DS (n = 10) site representatives in January 2020. Template analysis was used to identify themes through a priori and inductive codes. Participants identified two primary facilitators: support from partner organizations and on-site program stewardship. Produce (and program) seasonality and mitigating food waste were the most cited challenges. Despite challenges, both CFS and DS sites perceive the models to be successful efforts for supporting the local economy, achieving organizational missions, and providing consumers with greater access to locally grown produce. These innovative programs demonstrate good feasibility, but long-term sustainability and impacts on other key stakeholders merit further investigation.