Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and many other biological effects. In humans, the most important compounds in this group are vitamin D3 (cholecalciferol) and vitamin D2 (ergocalciferol). The major natural … See more Several forms (vitamers) of vitamin D exist. The two major forms are vitamin D2 or ergocalciferol, and vitamin D3 or cholecalciferol. Vitamin D without a subscript refers to either D2 or D3, or both, and is known … See more The active vitamin D metabolite calcitriol mediates its biological effects by binding to the vitamin D receptor (VDR), which is principally located … See more Supplementation with vitamin D is a reliable method for preventing or treating rickets. The effects of vitamin D supplementation on non-skeletal health are uncertain. A … See more Recommendations on recommended 25(OH)D serum levels vary across authorities, and vary based on factors like age. US labs generally report 25(OH)D levels in ng/mL. Other countries often use nmol/L. One ng/mL is approximately equal to 2.5 nmol/L. See more A diet with insufficient vitamin D in conjunction with inadequate sun exposure causes vitamin D deficiency, which is defined as a blood 25(OH)D level below 12 ng/ml (30 … See more Recommended levels Various institutions have proposed different recommendations for the amount of See more Vitamin D toxicity is rare. It is caused by supplementing with high doses of vitamin D rather than sunlight. The threshold for vitamin D toxicity has not been established; however, according to some research, the tolerable upper intake level (UL) is 4,000 See more WebCholecalciferol is known as vitamin D 3 for historical reasons. The chemical structure of vitamin D 2 was worked out earlier than that of D 3 because of the availability of …
Vitamin D Biosynthesis, Benefits, & Recommended …
WebMar 31, 2024 · vitamin D, any of a group of fat-soluble vitamins important in calcium metabolism in animals. It is formed by ultraviolet radiation (sunlight) of sterols present in the skin. The term vitamin D refers to a family of … WebApr 13, 2024 · Cholecalciferol, of vitamine D3, reguleert de metabolische activiteit en het insulinegehalte, wat helpt bij het afvallen. ... Het is noodzakelijk voor de synthese van neurotransmitters (zoals dopamine, serotonine en noradrenaline) die cruciaal zijn voor de groei en werking van de hersenen. Zink. hawaii cheeseburger in paradise
Vitamin D - Health Professional Fact Sheet - National …
WebDec 17, 2015 · A. Vitamin D and 25(OH)D 3. Vitamin D 3 (cholecalciferol), the natural form of vitamin D, is produced in the skin from 7-dehydrocholesterol. Upon irradiation, 7-dehydrocholesterol … Web2 Synthesis of vitamin D and its mode of action. 7-dehydrocholesterol present in the skin is the basic raw material for the synthesis of vitamin D. 7-dehydrocholesterol is broken … WebJan 24, 2024 · The skin, liver and kidneys work together to synthesize 1,25-diydroxy vitamin D (calcitriol), the active form of vitamin D, which helps maintain normal levels of calcium … hawaii cruises january 2022