Importance of vitamin D3, its deficiency symptoms and treatment

Vitamin D3 is a fat soluble ultraviolet rays of sun converted cholesterol of skin into vitamin D3. It is immunity boaster so without vitamin D3 no functions of body can be performed properly. Obesity, old age and indoor lifestyle are causes of its deficiency. Fatigue, back pain , hair Loss are symptoms of its deficiency and it can be treated through sunlight and dosage available in market
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