Two forms of Vitamin D are important to humans: Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol).
- Vitamin D2 is made by plants.
- Vitamin D3 is made by the human body whenever the skin is exposed to ultraviolet B (UVB) rays from the sun. As little as ten minutes of sun exposure may produce enough Vitamin D to prevent a deficiency.*
Vitamin D aids in the absorption of calcium and phosphorous, and this increases blood levels of these minerals for proper calcification of bones and cartilage. Vitamin D therefore adds to bone strength and lessens the probability of fractures, by increasing bone mineral density.*
Deficiencies in Vitamin D can cause skeletal deformities in children and weak muscles and bones in adults.*
Sometimes, Vitamin D is studied as a hormone because of its role regulating certain organ and tissue systems.*
Dr. Hulda Clark recommended Vitamin D3 to help remove deposits of tricalcium phosphate, an additive used by the food industry, by “mobilizing” the calcium in the deposits.