18 Dec 2017 --- One in two persons aged 65 and above has suboptimal levels of vitamin D in the blood. This is according to a study conducted by researchers at the Helmholtz Zentrum München, as part of the population-based KORA-Age study in the region of Augsburg, Southern Germany. Moreover, one in four older adults has suboptimal vitamin B12 level, the authors of the study report in the journal Nutrients.
