Assertion: vitamin b12's deficiency | /r/RelatedTo | neurodegenerative diseases
Facets:
value: often
type: TEMPORAL
Source sentences:
text: A deficiency of vitamin D has often been associated with neurodegenerative diseases; for that reason alone, supplementation with this vitamin is common in the aging population (Consuelo H.Wilkins, M.D., et al., 2006).