Vitamin D is a fat soluble vitamin that is essential for maintaining normal levels of calcium and phosphorus in the the blood
Reference ID: i7f3s8b0
Category: Vitamins & Supplements
People Can Apply: 09/14/2015 - 09/28/2015
Final Approval Date: 10/05/2015
Final Shipment Date: 10/07/2015
Retail purchase price: $ 14.97
Purchase price: Business will provide free or highly discounted products for authors
Shipping options: Shipping is not free
Product URL: https://www.giveawayservice.com/p/i7f3s8b0/0
Task 1: Write review on Third Party Website
AN ESSENTIAL VITAMIN
Vitamin D is a fat soluble vitamin that is essential for maintaining normal levels of calcium and phosphorus in the the blood. Vitamin D has other roles in the body, too, including modulation of cell growth, neuromuscular and immune function, and overall health.*
VITAMIN D SOURCES
Vitamin D encompasses two forms: vitamin D2, which is produced by plants, and vitamin D3, which is synthesized when human skin is exposed to the sun's ultraviolet B shortwave rays.
A very limited variety of foods contain naturally occurring vitamin D; among them are salmon, mackerel, and some mushroom varieties. Foods may be additionally fortified with vitamin D; these commonly include milk and yogurt, tuna, sardines, beef, eggs, orange juice, and many breakfast cereals. Fortified foods may contain either vitamin D2 or vitamin D3.
VITAMIN D ABSORPTION
Vitamin D obtained from sun exposure, food, and supplements is biologically inert and must undergo two chemical processes in the body for activation. The first occurs in the liver and converts vitamin D to 25-hydroxyvitamin D [25(OH)D], also known as calcidiol. The second occurs primarily in the kidney and forms the physiologically active 1,25-dihydroxyvitamin D [1,25(OH)2D], also known as calcitriol.
Vitamin D3, as cholecalciferol, is bioidentical to the vitamin D produced by the human body. Studies have shown that Vitamin D3 increases the total [25(OH)D] concentration more than vitamin D2, suggesting that vitamin D3 is more bioavailable in supplementation.*