35aae033___Why_do_I_need_it_
[What’s the nutrient?] Vitamin D [Where do I find it?] Exposure to sunlight activates a form of vitamin D lying beneath the skin.Foods fortified with vitamin D like milk and butter. [Why do I need it?] 
To provide health and strength to the bones and teeth. For the uptake of calcium from the diet.
Why do I need it?