Related Experiment Video
Updated: May 30, 2026

Quantitating Iron Transport Across the Mouse Placenta In Vivo Using Nonradioactive Iron Isotopes
Published on: May 10, 2022
Social and biological determinants of iron deficiency anemia
Rosângela Minardi Mitre Cotta1, Fabiana de Cássia Carvalho Oliveira, Kelly Alves Magalhães
1Universidade Federal de Viçosa, Viçosa, Brasil. rmmitre@ufv.br
Insights
Anemia in children is linked to low paternal education and unsafe water. The Brazilian Income Transfer Program (PBF) showed a protective effect against anemia in children under two years old.
Area of Science:
- Public Health
- Pediatrics
- Nutritional Epidemiology
Background:
- Anemia remains a significant public health issue in children globally.
- Identifying social and biological determinants is crucial for effective interventions.
- The Brazilian Income Transfer Program (PBF) aims to alleviate poverty and improve health outcomes.
Purpose of the Study:
- To investigate the social and biological factors associated with anemia in children.
- To compare anemia prevalence between children participating in and not participating in the PBF.
- To assess the role of the PBF in mitigating anemia risk.
Main Methods:
- Cross-sectional study design involving 446 children aged 6-84 months.
- Anemia assessment using Hemocue portable hemoglobinometer with age-specific cutoffs.
- Multivariate analysis employing Poisson hierarchical regression with robust variance.
Main Results:
- No significant difference in overall anemia prevalence between PBF beneficiaries and non-beneficiaries.
- Identified risk factors for anemia: low paternal schooling, cesarean birth, untreated water consumption, stunting, and age < 24 months.
- Significantly higher anemia prevalence in non-beneficiary children under two years compared to beneficiaries.
Conclusions:
- Social determinants like paternal education and access to safe water are key factors in childhood anemia.
- The PBF demonstrates a potential protective effect against anemia, particularly in younger children.
- Targeted interventions addressing identified risk factors are essential for anemia prevention programs.
Abstract:
This cross-sectional study aimed to identify the social and biological determinants of anemia in children enrolled in the Brazilian Income Transfer Program (PBF). The study evaluated 446 children (69.1% of the total enrolled) ranging from 6 to 84 months of age, of whom 262 were receiving the income transfer (60.2% of the beneficiaries) and 184 were not (87.6% of the non-beneficiaries). Testing for anemia was performed with the Hemocue portable hemoglobinometer, and the cutoff points were set at 11.0 and 11.5 g/dL, according to age bracket. The data were analyzed using Poisson hierarchical regression with robust variance for multivariate analysis. There was no difference in the anemia prevalence rates between the beneficiary and non-beneficiary groups. Risk factors for anemia were low paternal schooling, cesarean birth, consumption of untreated water, stunting, and age less than 24 months. Prevalence of anemia in the group of non-beneficiary children under two years of age was significantly higher than in the beneficiary group in the same age bracket, suggesting the importance of the PBF income transfer for preventing anemia in children.
Related Concept Videos
Causes of Social Behavior III: Biological and Environmental Influences
The Periodic Table and Organismal Elements
Factors Affecting Erythropoiesis
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
Microbes and Other Elemental Cycles
Depressive Disorders: Etiology
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
Disorders of Erythrocytes
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...

