In this pooled analysis, authors reanalyzed individual-level biomarker data for micronutrient status from nationally representative, population-based surveys. They estimated the prevalence of deficiency in at least one of three micronutrients for preschool-aged children (iron, zinc, and vitamin A) and for non-pregnant women of reproductive age (iron, zinc, and folate), globally and in seven regions using 24 nationally representative surveys done between 2003 and 2019. The global prevalence of deficiency in at least one of three micronutrients was estimated to be 56% among preschool-aged children, and 69% among non-pregnant women of reproductive age, equivalent to 372 million preschool-aged children and 1·2 billion non-pregnant women of reproductive age.
