Vitamin D3: The Flip Side of a Useful Hormone

Vitamin D may be regarded as one of the oldest vitamin known to man. It can also be said to have preceded the creation of man as an earthly being. This article tries to expose some of the benefits or otherwise of vitamin D as its popularity in different aspects of human lives- medical, social and physical- is gradually increasing. While a large body of evidence promotes its supplementation and deemed it useful for healthy living, many investigators are wary of its potential toxicity to the body. Clearly, there is a need for a widely accepted guidelines relating to its supplementation, cut off values, relevant biomarkers and a reliable prevalence data of its insufficiency. Key words; Vitamin D, supplementation, toxicity.