Beyond Calories: Addressing Micronutrient Deficiencies in the World's Most Vulnerable Communities-A Review.
Level 5 - mechanism / opinion, no new human data
Narrative review without systematic search criteria or meta-analytic data synthesis.
PubMed 41470905 · doi:10.3390/nu17243960
What was done
The authors conducted a narrative review evaluating the prevalence, drivers, and consequences of selected micronutrient deficiencies (iron, iodine, zinc, vitamin A, and vitamin D) among vulnerable populations in low- and middle-income countries. They synthesized literature on systemic drivers, health and socioeconomic outcomes, intervention strategies, and policy barriers.
What was found
The abstract reports no quantitative data or statistical estimates. Qualitatively, it identifies poverty, limited dietary diversity, weak nutritional strategies, and health service access barriers as primary drivers. Reported consequences include stunted growth, increased illness susceptibility, impaired cognitive and social functioning, and deepened poverty. Interventions identified include dietary diversification, supplementation, biofortification, and fortified foods, which face barriers including high food costs, weak healthcare infrastructure, low education, and ineffective policy implementation.
Why it matters
This review highlights that addressing hidden hunger requires moving beyond caloric sufficiency to target micronutrient quality through coordinated, multisectoral food system and healthcare policies.
Limits
As a narrative review, it lacks a systematic literature search, formal inclusion/exclusion criteria, study quality appraisal, and meta-analytic synthesis. No sample sizes, study counts, or quantitative metrics are reported in the abstract.
Cited by
- context An estimated 2 billion people worldwide are zinc deficient.