Thursday June 19, 2014 (foodconsumer.org) -- Vitamin D deficiency has been associated with oral diseases including periodontitis, caries, and tooth loss, which are common in Germany.A new study suggests that maintaining sufficient concentrations of serum 25-hydroxy vitamin D (25OHD) can reduce risk of tooth loss.Specifically, thw study shows that after adjustment for multiple confounders, each 10-µg of vitamin D per L increase of serum 25(OH)D was correlated with a 13% decreased risk of tooth loss. But vitamin D supplementation did not seem to protect against caries progression.  (David Liu)Zhan Y, Samietz S, Holtfreter B, Hannemann A, Meisel P, Nauck M, Völzke H, Wallaschofski H, Dietrich T, Kocher T.  Prospective Study of Serum 25-hydroxy Vitamin D and Tooth Loss.  J Dent Res. 2014 May 14. pii: 0022034514534985.