In the field of nutritional epidemiology, understanding how dietary diversity and nutrition support affect health outcomes in vulnerable populations is critical. Vulnerable populations, including children, the elderly, refugees, low-income communities, and individuals with chronic illnesses, face heightened risks of undernutrition and nutrition-related diseases. Although the importance of dietary diversity is well recognized, its precise role in promoting health outcomes remains unclear. Challenges persist in defining and measuring dietary diversity across different cultural contexts and socioeconomic settings. Recent strides in nutritional epidemiology have begun to unravel the complex factors affecting dietary diversity, yet significant knowledge gaps remain, particularly concerning effective interventions and policy implementations.

This Research Topic aims to explore the multifaceted relationships among dietary diversity, various forms of nutrition support, and health outcomes in vulnerable populations. The main objective is to elucidate the methodological advances, intervention strategies, and public health policy considerations needed in nutritional epidemiology. We seek to answer specific questions regarding the socioeconomic, cultural, and environmental determinants of dietary diversity, the role of food environments, the efficacy of supplementation programs, and dietary diversity's impact on growth and disease risk. By focusing on these areas, the Research Topic will develop a comprehensive understanding of how to improve dietary diversity and subsequently enhance health outcomes in vulnerable communities.

To gather further insights into the various facets of this research, we welcome articles addressing, but not limited to, the following themes:

o Methodological challenges in assessing dietary diversity

o Validation of dietary diversity scores across different cultural contexts

o Socioeconomic, cultural, and environmental determinants of dietary diversity

o Efficacy of food supplementation programs

o Integration of community health workers in nutrition support delivery

o Associations between dietary diversity and specific health outcomes

o Impact of digital tools and mHealth in monitoring dietary diversity

o Food security and the availability of effective nutrition.

We invite submissions in various formats including Original Research Articles, Systematic Reviews, Meta-analyses, Perspectives, and Case Studies. This will encourage an inclusive exploration of these critical issues within nutritional epidemiology.

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Dietary Diversity, Nutrition Support, and Health Outcomes in Vulnerable Populations