Estudo recente (2009) demonstrou melhora na hemoglobina e menor prevalência de anemia após a suplementação com acido fólico. Ref: Ganji V, Kafai MR. Hemoglobin and hematocrit values are higher and prevalence of anemia is lower in the post-folic acid fortification period than in the pre-folic acid fortification period in US adults. Am J Clin Nutr. Jan 2009;89(1):363-71.