Evaluation of Biochemical Markers of Malnutrition (Albumin, Transferrin, and Micronutrients) Among Under-Five Children in Rural Plateau State

Evaluation of Biochemical Markers of Malnutrition (Albumin, Transferrin, and Micronutrients) Among Under-Five Children in Rural Plateau State

ABSTRACT

Malnutrition remains a critical public health issue among under-five children in Nigeria, particularly in rural communities where poverty, food insecurity, and limited healthcare access are prevalent. Biochemical markers such as serum albumin, transferrin, and micronutrients (iron, zinc, and selenium) serve as sensitive indicators of nutritional status and can reveal early stages of protein-energy malnutrition and micronutrient deficiencies.

This study evaluates biochemical markers of malnutrition among under-five children living in rural areas of Plateau State. Blood samples were collected from selected participants and analyzed for serum albumin, transferrin, and essential micronutrients using standard biochemical methods. Anthropometric indices (weight-for-age, height-for-age, and weight-for-height) were also assessed to correlate biochemical findings with physical growth indicators.

Results indicated that a significant proportion of children exhibited low serum albumin and transferrin levels, suggesting mild to moderate protein-energy malnutrition. Micronutrient analyses revealed deficiencies in iron and zinc, with selenium levels generally within normal range. The findings emphasize the need for improved nutritional interventions, dietary diversification, and community health education to mitigate malnutrition in rural Plateau State.

Keywords: Malnutrition, Biochemical markers, Albumin, Transferrin, Micronutrients, Under-five children, Plateau State

CHAPTER ONE

1.0 Introduction

Malnutrition continues to threaten child survival, growth, and cognitive development across developing nations. In Nigeria, under-five children remain the most vulnerable group, particularly in rural areas where food insecurity, poor sanitation, and inadequate healthcare persist. Evaluating biochemical markers such as serum albumin, transferrin, and key micronutrients provides a reliable means of detecting nutritional deficiencies that may not be obvious from physical assessments alone.

Children under the age of five require optimal nutrition for rapid growth and immune system development. However, in rural Plateau State, several households depend on nutrient-poor diets, leading to stunted growth, wasting, and underweight conditions. By assessing biochemical indicators, this study seeks to understand the underlying nutrient deficiencies and inform effective public health strategies.

1.1 Statement of the Problem

Despite multiple nutrition intervention programs in Nigeria, malnutrition among under-five children remains high, especially in rural areas of Plateau State. Most previous studies relied mainly on anthropometric measurements without incorporating biochemical evaluations. As a result, subclinical deficiencies, particularly in proteins and trace elements, remain undetected. There is therefore a need for a biochemical approach to complement physical assessments, providing a clearer picture of nutritional health and guiding effective nutritional policies.

1.2 Aim and Objectives of the Study

Aim:
To evaluate biochemical markers of malnutrition (albumin, transferrin, and micronutrients) among under-five children in rural communities of Plateau State.

Objectives:

1. Determine serum levels of albumin and transferrin among under-five children.

2. Assess serum concentrations of essential micronutrients such as iron, zinc, and selenium.

3. Compare biochemical findings with anthropometric indices of the children.

4. Identify possible correlations between protein status and micronutrient deficiencies.

5. Provide recommendations for improving child nutrition and reducing malnutrition rates.

1.3 Research Questions

1. What are the serum albumin and transferrin levels among under-five children in rural Plateau State?

2. What are the concentrations of iron, zinc, and selenium in the study population?

3. How do these biochemical markers relate to anthropometric indicators of malnutrition?

4. What patterns or correlations exist among protein and micronutrient deficiencies?

1.4 Research Hypotheses

• H₀₁: There is no significant difference in serum albumin and transferrin levels among under-five children in rural Plateau State.

• H₁₁: There is a significant difference in serum albumin and transferrin levels among under-five children in rural Plateau State.

• H₀₂: Micronutrient levels (iron, zinc, selenium) do not significantly correlate with biochemical markers of protein status.

• H₁₂: Micronutrient levels significantly correlate with biochemical markers of protein status.

1.5 Significance of the Study

This study provides biochemical evidence of malnutrition among under-five children in rural Plateau State. By identifying specific nutrient deficiencies, the results will help health agencies and policymakers design targeted nutrition interventions. It will also assist healthcare professionals in early diagnosis of subclinical malnutrition, thereby improving child survival and development outcomes. Moreover, it contributes valuable data to Nigeria’s growing body of nutritional health research.

1.6 Scope of the Study

The study focuses on under-five children in selected rural communities across Plateau State. It evaluates serum albumin, transferrin, and key micronutrients (iron, zinc, selenium) as indicators of nutritional status. Anthropometric assessments complement the biochemical evaluations. The study does not cover urban children or evaluate other biomarkers such as vitamins or immune indicators.

1.7 Definition of Terms

• Albumin: The main plasma protein that reflects the body’s protein status and overall nutritional condition.

• Transferrin: A blood protein that binds and transports iron; often used as a marker for iron deficiency and protein malnutrition.

• Micronutrients: Essential trace elements (such as iron, zinc, and selenium) required in small quantities for normal metabolism.

• Under-five Children: Children aged between 6 months and 59 months.

• Malnutrition: A condition resulting from insufficient intake of essential nutrients required for normal body function.

CHAPTER TWO

2.0 Literature Review

2.1 Overview of Malnutrition in Under-Five Children

Malnutrition remains one of the major causes of morbidity and mortality among children under five years of age, particularly in low-income regions. According to UNICEF (2023), approximately one in three Nigerian children suffers from chronic malnutrition. Rural communities are disproportionately affected due to poor dietary diversity, food insecurity, and inadequate healthcare access.

Children in their first five years require balanced nutrition for tissue growth, enzyme synthesis, and immune competence. Any deficiency during this critical period can lead to irreversible physical and cognitive impairments.

2.2 Biochemical Markers of Protein-Energy Malnutrition

Serum Albumin:
Albumin is synthesized in the liver and represents a key marker for assessing protein status. Low serum albumin levels often indicate inadequate dietary protein intake or chronic infection. However, albumin levels may also decrease during inflammation due to redistribution rather than depletion (Gibson, 2019).

Serum Transferrin:
Transferrin plays a vital role in iron transport. Its synthesis decreases in protein deficiency and chronic illness. High transferrin levels may indicate iron deficiency, while low levels often accompany malnutrition or hepatic dysfunction (Black et al., 2021).

2.3 Micronutrients and Their Nutritional Role

Iron:
Iron is essential for hemoglobin formation and oxygen transport. Iron deficiency leads to anemia, fatigue, and developmental delays in children.

Zinc:
Zinc supports immune function, growth, and wound healing. Deficiency can impair immunity and cause growth retardation.

Selenium:
Selenium acts as an antioxidant and protects tissues from oxidative damage. Though deficiencies are rare, insufficient selenium can impair thyroid and immune functions (Keen & Zidenberg-Cherr, 2020).

2.4 Relationship Between Biochemical Markers and Anthropometry

Several studies show that biochemical parameters correlate with anthropometric indices such as weight-for-age and height-for-age. For example, children with low serum albumin or iron levels often present with stunted growth or underweight conditions (Onimawo et al., 2018). Combining biochemical and anthropometric assessments provides a more accurate understanding of malnutrition severity.

2.5 Factors Influencing Malnutrition in Rural Areas

Socioeconomic conditions, limited access to protein-rich foods, poor sanitation, and recurrent infections contribute to malnutrition in rural communities. Cultural feeding practices and maternal education also play significant roles in determining child nutritional status (FAO, 2022).

2.6 Conceptual Framework

This study assumes that poor dietary intake and socioeconomic factors lead to deficiencies in macronutrients and micronutrients, reflected through low serum albumin, transferrin, and trace element concentrations. These deficiencies, in turn, manifest as poor anthropometric growth indicators.

2.7 Gaps in Literature

While anthropometric surveys are common, few studies in Plateau State have integrated biochemical evaluations with growth measurements among under-five children. This gap limits understanding of hidden malnutrition and its biochemical manifestations.

2.8 Summary

Biochemical markers such as albumin, transferrin, and micronutrients provide early and reliable indicators of malnutrition. Evaluating these parameters among under-five children helps identify nutritional deficiencies before visible symptoms emerge. Understanding these relationships in rural Plateau State is essential for planning effective community-based nutritional interventions.