Vitamin A deficiency may cause anemia as vitamin A is essential for hematopoiesis, mobilization of iron store, and immunity. This propensity score matched retrospective cohort study used data of the Ethiopian Demographic Health Survey 2011 to assess the effect of single high dose vitamin A supplementation on the hemoglobin status of children aged 6-59 months. The study found that children who received vitamin A supplementation had a decrease in risk of anemia than those who were not supplemented.
BMC Pediatrics 2014