New Data Shows Young Children Aren't Getting Adequate or Recommended Amounts of Key Nutrients Such as Calcium, DHA, Vitamin D and Iron Nutritional inadequacies in children aged 1-6 could impact physical, social, and cognitive growth during important developmental years News provided by Share this article Share this article PARSIPPANY, N.J., June 2, 2021 /PRNewswire/ -- A recent study evaluating micronutrient adequacy of diets consumed by young children (aged 1-6) in the United States found that although most children had adequate intakes of most vitamins and nutrients, there were several areas where significant nutritional inadequacies could be cause for concern, specifically calcium, vitamin D, iron and DHA.