Large-scale studies identified genetics variants in several genes that contribute to vitamin D deficiencies.
Food rich in vitamin D include fatty fish such as tuna, mackerel, trout, herring, sardines, kipper, anchovies, or carp.
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Sample Report: Vitamin D Deficiency
Vitamin D is a fat-soluble vitamin that is critical to bone and muscle health, normal functioning of immune, endocrine and cardiovascular systems. Vitamin D can be synthesized in the skin upon exposure to sunlight: it is metabolized into active form and regulates hundreds of genes by binding to vitamin D receptor (VDR).
There is scientific evidence that vitamin D is not only essential for strong bone and muscle maintenance, but it plays an important role in lowering the risk of several chronic diseases, including those involving the immune and cardiovascular systems.
There is a steady increase in cases of severe vitamin D deficiencies in developed countries, mainly due to sun protection measures.
Other factors that contribute to vitamin D deficiency include environmental conditions (air pollution, geographical locations), as well as dark skin, older age, obesity, and genetic variations.
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