Prevalence of the iron, iodine and vitamin A (three major micronutrient) deficiencies across the continents, in WHO regions; presented as percentage of population (data adapted from the Table 1.1 of WHO report [10]). Y-axis illustrates the percentage data WHO regions: (Blue bars) Anemia, based on the proportion of the population with hemoglobin concentrations below established cutoff levels [106]; (Red bars) Iodine deficiency based on the proportion of the population with urinary iodine <100 μg/L [35]; (Green bars) Estimated vitamin A deficiency based on the proportion of the population with clinical eye signs and/or serum retinol ≤ 0.70 μmol/L [107]. SEA = Southeast Asian.
Figure 1: Global prevalence of micronutrient deficiency.