[Vitamin D dosage : is it for everyone ?]

In recent years, the topic of vitamin D has been the subject of numerous publications covering a wide range of fields, with the corollary effect of overusing its routine dosage. However, substitution benefits only a small part of the population and systematic dosing of vitamin D outside risk situations is not recommended. This dosage of vitamin D is only useful if it results in effective treatment in case of deficiency. The purpose of this article is to provide a synthesis of current knowledge about vitamin D, in particular about the indications for its dosage in clinical practice.