Osteoporos Int (2014) 25:2347–2357
To revisit the question posed in the title of this review, is vitamin D a tonic for bone and soft tissue? Probably not, but levels of <25–40 nmol/L do have significant adverse consequences, so should be prevented. However, as with any potent bioactive compound, more is not necessarily better, and use of vitamin D should be based on trial data, not on inferences drawn from studies of associations.
Autor: I. R. Reid & M. J. Bolland