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Cholecalciferol (Vitamin D)
 Vitamin
D, calciferol, is a fat-soluble vitamin. It is found in food, but also can be
made in your body after exposure to ultraviolet rays from the sun. Vitamin D
exists in several forms, each with a different activity. Some forms are
relatively inactive in the body, and have limited ability to function as a
vitamin. The liver and kidney help convert vitamin D to its active hormone form.
The major biologic function of vitamin D is to
maintain normal blood levels of calcium and phosphorus. Vitamin D aids in the
absorption of calcium, helping to form and maintain strong bones. It promotes
bone mineralization in concert with a number of other vitamins, minerals, and
hormones. Without vitamin D, bones can become thin, brittle, soft, or misshapen.
Vitamin D prevents rickets in children and osteomalacia in adults, which are
skeletal diseases that result in defects that weaken bones.
Recommended Dietary Allowances: Men = 400 IU (5 mcg); Women =
200 IU (5 mcg); Pregnant Women, Children, Adolescents = 400 IU (10 mcg)
IMPORTANCE:
- Improves absorption and utilization of Calcium and
Phosphorous required for bone and teeth formation
- maintains a stable nervous system and normal heart action.
DEFICIENCY SYMPTOMS:
- rickets
- tooth decay
- softening of bones
- improper healing of fractures
- lack of vigor
- muscular weakness
- inadequate absorption of calcium
- retention of phosphorous in the kidneys
- osteomalacia
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