Essential Vitamin That Improves Workout Performance
Vitamin D is an essential for the proper functioning of the body. It is a fat-soluble vitamin. The vitamin can be found in few foods, and it can also be acquired from its dietary supplements. Vitamin D comprises of two compounds, and these include calciferol and cholecalciferol. The two forms of vitamin D are formed from pro-vitamins, which are sterols. The pro-vitamins are converted to calciferol and cholecalciferol in the presence of sunlight; hence, they are also referred to as sunshine vitamins.
Vitamin D sources
The vitamin is normally found in foods of animal origin. The best sources include the marine fish-liver oils. Example include the halibut liver oil, cod liver oil, and shark liver oil. Smaller amounts of the vitamin can also be found from the egg yolk, sardines, and butter. Mushrooms are also reported to have some minimal amounts of vitamin D.
The absorption, transport and storage of vitamin D in the body
Vitamin D is absorbed in the gut in the presence of bile salts. The vitamin then binds to a vitamin D binding protein known as Vitamin D Binding Protein (DBP). Different tissues in the body will then take up the vitamin from its complex with the binding protein. Vitamin D is kept in the liver and the adipose tissue.
The most active form of vitamin D is calcitriol. It also acts as a steroid hormone that is formed in the kidney. Calcitriol is known as a hormone because its formation takes place in the kidney and it does its functions in the intestine and bones. It is capable of increasing the process of protein synthesis through gene stimulation.
The importance of vitamin D in the body
• Vitamin D plays various important roles in the body. One of its primary function involves promotion of the absorption of calcium ions in the gut. Through the process, vitamin D helps in maintaining the normal serum levels of calcium and phosphorus hence enhancing bone formation.
• Vitamin D is also a requirement in the process of bone growth and maintenance by osteoclasts and osteoblasts.
• Vitamin D is also crucial in the course of maintaining the body’s muscle tone.
• An individual risk developing osteoporosis when suffering from vitamin D deficiency. Symptoms of this condition may include porous bone accompanied by bone pain. Bone fractures are also common.
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