Vitamin D - Sources and Functions

Sources of Vitamin D

1. Vitamin D is produced from a substance present beneath the skin when sunlight falls upon the surface of the body.
2. This vitamin is not present in any significant degree in foods.
3. Its natural distribution is limited to small amounts in fish oils, eggs, and butter.
4. Compared with fish-liver oil, which is the best source of vitamin D, other foods are quite low in vitamin D

Functions of Vitamin D

1. Vitamin D assists in the assimilation of calcium, phosphorus and other minerals in the digestive tract.
2. It is necessary for the healthy functioning of the parathyroid glands, which regulate the calcium level in the blood.
3. It is very important during infancy and adolescence for the proper formation of teeth and bones.
4. It plays an important role in the prevention of dental caries.
5. Vitamin D protects children against rickets.
6. A good supply of this vitamin during pregnancy benefits the mother and helps to ensure the satisfactory future development of the child.

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