About: http://webisa.webdatacommons.org/131793008

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The levels recommended, although somewhat higher, do not differ substantially from the most recent RDAs but are higher than current Canadian recommendations.Vitamin D used by the body comes mostly through exposure to the sun.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalacademies.org