Assertion: caffeine | /r/HasProperty | suspected
Facets:
value: of contributing to menstrual pain
type: TRANSITIVE-OBJECT
Source sentences:
text: Caffeine has been suspected of contributing to menstrual pain and cramping because it can act as a vasoconstrictor -- mildly constricting blood flow which can lead to pain.
text: If caffeine is the suspected culprit, cutting back or avoiding this substance is worth a try.