Is your child taking a Vitamin D Supplement?
Sue, my mother-in-law has done a ton of research on Vitamin D. Just to give you a little background, Sue is an RN and a certified massage therapist. She also is constantly self-educating and I trust her recommendations 150%. Our entire family is now taking Vitamin D supplements. Please watch this quick video on how important it is to have your child (especially 0-5 years old) on a supplement.
http://www.refresheverything.com/grassrootshealthvitamind