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Causes of Vitamin D deficiency Inadequate direct exposure to sunlight > Inadequate vitamin d intake Higher requirement Some diseases. which interfere with vitamin D absorption or meta bolic and activationCauses of Vitamin D deficiency ➢ Inadequate direct exposure to sunlight ➢ Inadequate vitamin D intake ➢ Higher requirement ➢ Some diseases, which interfere with vitamin D absorption or metabolic and activation
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