Review finds no evidence yet for Wayuu-specific child growth curves

A critical integrative review published in the International Journal for Equity in Health concludes that World Health Organization growth standards should remain the basis for screening and surveillance in Wayuu children, while cautioning that a z score is not an etiologic diagnosis and that interpretation must account for nutritional deprivation and barriers to care.

The review, authored by Everardo Manuel Sanchez Puche and Anderson Díaz Pérez and published open access on 22 October 2026, examined evidence on anthropometric misclassification and developed an equity-oriented conceptual framework. Its documented search update, completed on 14 September 2026, retrieved 309 records from PubMed and Europe PMC, of which 207 unique records went forward for screening, supplemented by targeted regional and repository searches.

The update added eight empirical sources and two associated bibliographic records. The authors separated evidence by population, age, study design and inferential role, retained bibliographic exports and selection decisions, and synthesized the material narratively through a proposition audit, without formal certainty grading.

According to the results, community studies document substantial nutritional impairment among Wayuu children, while selected clinical samples show heterogeneous findings. The authors stress that mixed-age growth reports, adolescent bioimpedance measurements and qualitative observations of care each require distinct interpretation.

Notably, the review explicitly rejects several claims that such data cannot support: the evidence does not establish a benign mesomorphic phenotype in young children, a water-saving metabolic adaptation, or a quantified WHO false-positive rate. The authors also note that food insecurity, language barriers, service access and situated measurement practices inform potential diagnostic-equity risks, but that the consequences of these risks require direct evaluation rather than being assumed.

On the central question of whether Wayuu children need population-specific growth references, the conclusions are firm. The reviewed evidence does not currently justify recommending the immediate development or clinical adoption of Wayuu-specific growth curves. WHO standards should remain available for comparable screening and surveillance, with interpretation incorporating serial growth, clinical and dietary assessment, structural conditions, accessible communication and Wayuu knowledge.

The review proposes a seven-component framework intended to orient diagnosis toward equity. The authors are explicit about its status: the framework is preliminary, non-validated and not a clinical guideline, and it requires Wayuu-led co-design and prospective evaluation before any adoption.

The article is published as a Review with open access, and the version shared ahead of final publication is citable and carries a permanent DOI, subject to further edits before the Version of Record. The abstract is provided in both English and Spanish, reflecting the international scope of the journal.

For clinicians and public health practitioners, the review’s practical message is one of calibrated caution: growth standards remain a shared screening tool, but their results in Wayuu children should be read alongside longitudinal follow-up, clinical and dietary context, and the structural conditions that shape both nutrition and access to care, rather than being treated as standalone diagnoses.

Subject of Research: Anthropometric misclassification and diagnostic equity in Wayuu children

Article Title: Anthropometric standardization, structural inequity and diagnostic justice in Wayuu children: a critical integrative review and equity-oriented framework

Article References: Puche, E. M. S., & Pérez, A. D. (2026). Anthropometric standardization, structural inequity and diagnostic justice in Wayuu children: a critical integrative review and equity-oriented framework. International Journal for Equity in Health. https://doi.org/10.1186/s12939-026-03080-x

Image Credits: AI Generated

DOI: 10.1186/s12939-026-03080-x

Keywords: Wayuu children, growth standards, WHO growth references, anthropometry, diagnostic equity, nutritional impairment, integrative review, health equity, z scores, food insecurity, language barriers, colombia