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Vitamin D (the inactive version) is mainly from two forms: vitamin D 3 and vitamin D 2. Vitamin D 3, or cholecalciferol, is formed in the skin after exposure to sunlight or ultra violet radiation or from D 3 supplements or fortified food sources. Vitamin D 2, or ergocalciferol, is obtained from D 2 supplements or fortified food sources. [3]
Melanin can also affect vitamin D levels. ... However, taking too much vitamin D can cause side effects or health issues. “Vitamin D is a fat-soluble vitamin, therefore it is not excreted in ...
The great news is you can meet your vitamin D needs with either form of vitamin D, but most health experts recommend vitamin D3 supplements because it’s more effective in raising vitamin D ...
Learn more about vitamin D benefits, including how the micronutrient supports your health and performance, with this guide. Learn more about vitamin D benefits, including how the micronutrient ...
This condition can be caused by vitamin D, calcium or phosphorus deficiency. [86] Vitamin D deficiency remains the main cause of rickets among young infants in most countries because breast milk is low in vitamin D, and darker skin, social customs, and climatic conditions can contribute to inadequate sun exposure.
Vitamin D toxicity, or hypervitaminosis D, is the toxic state of an excess of vitamin D. The normal range for blood concentration of 25-hydroxyvitamin D in adults is 20 to 50 nanograms per milliliter (ng/mL).