Vitamin D can also be referred to as calciferol

There a few types or variations of this specific Vitamin.

It s considered a fat soluble vitamin.

In this group, for humans – the most important type is Vitamin D3.

Diet does account for only a small portion of Vitamin D.

 

Different Types of Vitamin D

1.)  D1  –  ergocalciferol + lumisterol

2.)  D2  –  ergocalciferol

3.)  D3  –  cholecalciferol

4.)  D4  –  22-dihydroegocalciferol

5.)  D5  –  sitocalciferol

 

Sources:

Skin

  • Production of D3 occurs in the skin from 7-dehydrocholesterol and UV light from sunlight
  • Some animals have very little vitamin D production in this manner
  • Concentration of melanin is important

Foods

  • Salmon
  • Tuna
  • Catfish
  • Sardines
  • Herring
  • Fish oils
  • Egg
  • Beef liver

 

Function:

  • Important role in health of many organ systems
  • Helps the absorption of calcium and phosphorus
  • Can promote calcification of certain tissues
  • Affects certain hormones
  • Affects the Immune system
  • others

 

Other health benefits

  • Cancer prevention
  • Improved immune system response
  • Prevention of Cardiovascular Disease

 

Deficinecy

Toxicity  – is often rare

  • Itching
  • Excess urine
  • Nausea
  • Abdominal pain
  • Possible renal failure
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