What are the benefits of vitamin D for kids?
Bone health is of primal importance during childhood. Not only is this the period in one’s life where bones are actively growing and developing, but this is also the time when you are building up your bones to ensure good bone health in your senior years.
Adequate levels of vitamin D in the bloodstream are essential for the development of strong, healthy bones and teeth. In fact, a deficiency in vitamin D can result in a childhood disease called rickets, where bones become soft and deformed. It was infrequent to hear of this disease a few decades ago as most children were getting an abundance of vitamin D while playing outside in the sun. Depending on where you live, it can be very difficult for children to play outdoors consistently. As a result, many children are getting much less time in the sun and consequently, less vitamin D. Some researchers express concern about a global re-emergence of rickets disease in children. Rickets cases are seen particularly in children who live in northern areas, who are dark-skinned, or who are breastfed without appropriate vitamin D supplementation.[2,3]
Supplementation with vitamin D is recommended for all breastfed infants, and often recommended beyond infancy to support bone and teeth development.
Children fall. It is inevitable. Healthy bones in children are important for the wear and tear during these tumbles. Insufficient vitamin D levels are associated with higher bone fractures in children.
Vitamin D is important during childhood to support healthy bone development, but it is also important for keeping bones strong some thirty, forty or fifty years later in life. Approximately 90 per cent of bone growth takes place between the ages of 10 and 20 or 30 years.[5,6] During this period, a person’s bones will reach its peak density. Denser bones are a definite benefit because we start losing some of it in our later years. For women, bone loss mostly occurs rapidly immediately after menopause and then the rate of bone loss slows down. If too much bone density is lost, this increases the risk of osteoporosis and of bone fractures. Osteoporosis has been referred to as “a pediatric disease with geriatric consequences” .
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 J Clin Invest. 2006 Aug 1; 116(8): 2062–2072. Resurrection of vitamin D deficiency and rickets, Michael F. Holick, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1523417/
 2007 Jul 17; 177(2): 161–166. Vitamin D–deficiency rickets among children in Canada Leanne M. Ward, MD, Isabelle Gaboury, MSc, Moyez Ladhani, MD, and Stanley Zlotkin, MD PhD. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1913133/
 Am J Clin NutrDecember 2004 80 no. 6 1697S-1705S, Nutritional rickets among children in the United States: review of cases reported between 1986 and 2003, Pamela Weisberg, Kelley S Scanlon, Ruowei Li, and Mary E Cogswell. https://academic.oup.com/ajcn/article/80/6/1697S/4690514
 J Pediatr Orthop. 2017 Sep 16. Vitamin D Insufficiency and Fracture Risk in Urban Children. Thompson RM1, Dean DM, Goldberg S, Kwasny MJ, Langman CB, Janicki JA. https://www.ncbi.nlm.nih.gov/pubmed/26600296
 Hightower L., Osteoporosis: pediatric disease with geriatric consequences, Orthop Nurs.2000 Sep-Oct;19(5):59-62. https://www.ncbi.nlm.nih.gov/pubmed/11153388
 NIH Osteoporosis and Related Bone Diseases National Resource Center, Kids and Their Bones, March 2015, https://www.bones.nih.gov/health-info/bone/bone-health/juvenile
 NIH Osteoporosis and Related Bone Diseases National Resource Center, Peak Bone Mass in Women, June 2015, https://www.bones.nih.gov/health-info/bone/osteoporosis/bone-mass
 American Academy of Pediatrics, Vitamin D Supplementation for Infants, 3/22/2010, https://www.aap.org/en-us/about-the-aap/aap-press-room/pages/Vitamin-D-Supplementation-for-Infants.aspx