Assertion: osteoporosis | /r/HasProperty | sign
Facets:
value: usually
type: DEGREE
Source sentences:
text: Osteoporosis is often called a silent disease, as there are usually no signs or symptoms until you break a bone.
text: As mentioned earlier, Osteopenia and osteoporosis often go unnoticed until a person fractures a bone, but there are some signs and symptoms that can be experienced.