Similar to vitamin D2, vitamin D3 undergoes metabolic processes in the liver and kidneys to become biologically active. In the liver, vitamin D3 is hydroxylated to form 25-hydroxyvitamin D3 (25(OH)D3) ...

Vitamin D is available in two forms: plant-derived vitamin D2 or vitamin D3 from animal-based foods (D3 is also produced when skin is exposed to sunlight). Supplements and fortified foods contain ...

Vitamin D3 (cholecalciferol) is most well-known for promoting bone health ... Oral and topical vitamin d, sunshine, and uvb phototherapy safely control psoriasis in patients with normal pretreatment ...

Methods: Independent genetic variables were obtained from genome-wide association studies (GWAS) and publicly available databases. The summary statistics for 25-hydroxyvitamin D (25(OH)D) were ...

Some studies suggest that vitamin D blood levels over 40 ng/mL have a protective effect. Kuhn T, Kaaks R, Becker S, et al. Plasma 25-hydroxyvitamin D and the risk of breast cancer in the European ...