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Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and for many other biological effects. [ 1][ 2] In humans, the most important compounds in this group are vitamin D 3 ( cholecalciferol) and vitamin D 2 ( ergocalciferol ). [ 2][ 3] The major natural source of ...
Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body. [ 1 ] [ 7 ] [ 2 ] One nanogram per millilitre ( 1 ng/mL ) is equivalent to 2.5 nanomoles per litre ( 2.5 nmol/L ).
Both vitamin D2 and vitamin D3 will help to increase vitamin D levels in the blood, says Pelitera. However, some studies have shown that supplementing vitamin D3 does a little bit better of a job ...
Calcitriol. Calcitriol is the active form of vitamin D, normally made in the kidney. [8] [9] [10] It is also known as 1,25-dihydroxycholecalciferol. It is a hormone which binds to and activates the vitamin D receptor in the nucleus of the cell, which then increases the expression of many genes. [11]
Vitamin D contributes to your health in several ways and you can up your intake with just a few minutes of sunshine. Here's what else to know.
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 latter form of vitamin D is the active hormone which stimulates calcium uptake from the intestine. [22] Via the kidney, PTH enhances the absorption of calcium in the intestine by increasing the production of activated vitamin D. Vitamin D activation occurs in the kidney.
Vitamin D is a secosteroid that plays a vital role in calcium and phosphate absorption. Recent studies show several associations between low levels of vitamin D, or hypovitaminosis D, and neuropsychiatric disorders, [1] including Alzheimer's disease, autism, epilepsy, multiple sclerosis, Parkinson's disease, and schizophrenia. [1] [2]
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