Evidence map›Paper›PMID 34993390›Full record

ArticleCurrent developments in nutrition2021

Challenges for Estimating the Global Prevalence of Micronutrient Deficiencies and Related Disease Burden: A Case Study of the Global Burden of Disease Study.

Sonja Y Hess, Alexander C McLain, Edward A Frongillo, Ashkan Afshin, Nicholas J Kassebaum, Saskia J M Osendarp, Reed Atkin, Rahul Rawat, Kenneth H Brown

Registry-linked trialAbstract read
In one paragraph

Article in Current developments in nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07483645 (Effectiveness and Acceptability of a Liposomal Iron Supplement With Vitamin C and Fiber), which is not on this map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07483645 active not recruitingnot on this mapstarted 2025, after this paper: background citation

Effectiveness and Acceptability of a Liposomal Iron Supplement With Vitamin C and Fiber (LISEFEX®): Observational, Descriptive, Prospective, Longitudinal, Multicenter Study in Mexican Subjects Diagnosed With Mild to Moderate Iron Deficiency Anemia.

TypeobservationalSponsorCarnot LaboratoriesRan2025 to 2026Enrolled74ConditionsIron Deficiency Anemia
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Sonja Y HessInstitute for Global Nutrition and Department of Nutrition, University of California, Davis, Davis, CA, USA.ORCID https://orcid.org/0000-0002-4661-277X
Alexander C McLainDepartment of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.ORCID https://orcid.org/0000-0002-5475-0670
Edward A FrongilloDepartment of Health Promotion, Education, and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.ORCID https://orcid.org/0000-0002-8265-9815
Ashkan AfshinInstitute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA.ORCID https://orcid.org/0000-0001-6239-8809
Nicholas J KassebaumInstitute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA.ORCID https://orcid.org/0000-0002-4299-9348
Saskia J M OsendarpThe Micronutrient Forum, Washington, DC, USA.ORCID https://orcid.org/0000-0002-3847-5584
Reed AtkinThe Micronutrient Forum, Washington, DC, USA.
Rahul RawatBill & Melinda Gates Foundation, Seattle, WA, USA.ORCID https://orcid.org/0000-0002-6555-7809
Kenneth H BrownInstitute for Global Nutrition and Department of Nutrition, University of California, Davis , Davis, CA, USA.ORCID https://orcid.org/0000-0001-6498-3120

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Information on the prevalence of micronutrient deficiencies is needed to determine related disease burden; underpin evidence-based advocacy; and design, deliver, and monitor safe, effective interventions. Assessing the global prevalence of deficiency requires a valid micronutrient status biomarker with an appropriate cutoff to define deficiency and relevant data from representative surveys across multiple locations and years. The Global Burden of Disease Study includes prevalence estimates for iodine, iron, zinc, and vitamin A deficiencies, for which recommended biomarkers and appropriate deficiency cutoffs exist. Because representative survey data are lacking, only retinol concentration is used to model vitamin A deficiency, and proxy indicators are used for the other micronutrients (goiter for iodine, hemoglobin for iron, and dietary food adequacy for zinc). Because of data limitations, complex statistical modeling is required to produce current estimates, relying on assumptions and proxies that likely understate the extent of micronutrient deficiencies and the consequent global health burden.

Indexed as

deficiencyglobal burden of diseaseiodineironmicronutrientprevalencevitamin Azinc

Identifiers

PMID34993390
PMCPMC8728001

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.