Vitamin D deficiency is on the for children. Contributing factors may include the decreased time children play outside (because vitamin D is produced naturally when our skin is exposed to strong sunlight), the use of sunblock creams, and the decreased consumption of milk and other fortified foods. Many pediatricians recommend vitamin D supplementation for all breastfed infants and older children at risk for deficiency.* - See more at: https://www.yeswellness.com/sisu-kids-vitamin-d3-1000-iu.html#sthash.njiXSEP6.dpuf