Assertion: vitamin d's function | /r/HasProperty | several important
Facets:
Source sentences:
text: Vitamin D has several important functions.
text: So important is this function that even if calcium intake and body stores are sufficient, if vitamin D is low there is still a risk of poor calcification of the bones.
text: Though vitamin D is best known for its role in bone health, it is thought that it also has other important functions in the body.
text: Perhaps the most important function of vitamin B6, and which also happens to set this vitamin apart from the other B vitamins, is its important role when it comes to brain function.
text: Vitamin D has several important functions.