Vitamin D - Cholecalciferol, sunshine vitamin

Vitamin D is necessary for the reproduction of new skin cells. It is one of only three vitamins that are absorbed by the skin (the other two are vitamins A and E). It plays a key role in ensuring the absorption of calcium from the intestines.

Solubility: Fat

Functionality:
Required for bone and teeth formation, Improves absorption and utilization of Phosphorous and Calcium, Maintains stable nervous system

Rich Sources:
Egg Yolk, Fatty Fish, Milk; Also made in Skin when exposed to Sunlight

Deficiency Disease: Rickets and Osteomalacia

Overdose Disease: Hypervitaminosis D

Deficiency Symptoms:
Symptoms include bone pain and tenderness and Muscle Weakness. In children, Rickets may occur, in which bones lose calcium and become soft and curved. Without proper intake, there is an increased risk of Osteoporosis, Arthritis, and Cancer.

Deficiency Occurs in:

1. More common in strict vegetarians
2. Dark-skinned people
3. Alcoholics
4. People with liver or kidney disease
5. People with hyperparathyroidism
6. Also common in men with advanced prostate cancer

1. Men: 200 IU
   1. (over 50) 400 IU
   2. (over 70) 600 IU
   
   
2. Women: 200 IU
   1. (over 50) 400 IU
   2. (over 70) 600 IU
   
   
3. Pregnancy: 200 IU
4. Lactation: 200 IU