What is the main role of vitamin D in our body

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it helps in the assimilation of the Ca2+ ions in our body... once the Ca2+ ions are there in your body, vitamin D along with some other hormone like thyroxin and parathyroid hormone, helps in the absorption of Ca from blood to bone, it helps maintaing bone density, and deficiency of which can cause bone deformities like rickets...

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Vitamin is essential in bone growth.Its main role in the body is to increase the flow of calcium into the blood stream.Natural vitamin gets form sun light.