Biochemical and Physiological Effects of Vitamin A Supplementation on Erythropoietin Response and Iron Utilization During Treatment of Iron Deficiency Anemia

Abstract

Background: Iron deficiency anemia (IDA) is a major nutritional and hematological disorder characterized by inadequate iron availability for hemoglobin synthesis and erythropoiesis. Vitamin A participates in iron mobilization, erythroid cell differentiation, and the regulation of iron metabolism. Its supplementation alongside conventional iron therapy may influence hematological recovery, iron utilization, and erythropoietin responses.

Objective: To evaluate the biochemical and physiological effects of vitamin A supplementation on serum erythropoietin concentration, iron utilization, and hematological recovery among patients receiving treatment for iron deficiency anemia.

Methods: A prospective comparative interventional study was proposed involving 78 patients with iron deficiency anemia, allocated into two groups of 39 participants each. Group A received conventional oral iron therapy combined with vitamin A supplementation, whereas Group B received oral iron therapy alone. Hematological and biochemical parameters, including hemoglobin, red blood cell indices, serum iron, ferritin, total iron-binding capacity, transferrin saturation, serum retinol, and erythropoietin, were assessed at baseline and after eight weeks. The planned analysis included within-group and between-group comparisons, with statistical significance set at p<0.05.

Results: The proposed outcome assessment included changes in hemoglobin concentration, erythrocyte indices, iron stores, serum retinol, and circulating erythropoietin. The intended analysis would determine whether combined vitamin A and iron supplementation produced greater hematological and biochemical improvement than iron therapy alone. Verified treatment-effect estimates and statistical significance cannot yet be reported because patient-level measurements have not been provided.

Conclusion: The study is designed to investigate the potential contribution of vitamin A supplementation to iron utilization and erythropoietic recovery during IDA treatment. Its clinical effectiveness must be determined from verified comparative data.