01 Sep 2014 Blackmores Institute Vitamin D supplements in young children necessary year round for bone health 01 Sep 2014 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Vitamin D supplementation is necessary in young children to prevent deficiency and to regulate bone metabolism in early life, a Turkish study shows. The study, which included over 1000 children aged between one and three years of age, found that those who did not receive vitamin D-containing supplements had insufficient vitamin D levels and low levels of calcium and phosphorus. × To continue reading this article, please Log In or Sign Up for access.