Assertion: vitamin d | /r/HasProperty | important for other body functions
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text: 5 Facts About Vitamin D 1 Vitamin D is not technically a vitamin, it is a precursor to the hormone calcitriol 2 Vitamin D is important for bone health and other body functions 3 Over 75% of Americans are Vitamin D deficient 4 Mushrooms are one of the few natural plant-based sources of vitamin D 5 Sunshine is the major source of vitamin D for most humans on the planet