Assertion: birth control | /r/MadeOf | estrogen
Facets:
Source sentences:
text: appropriate for women who can’t use birth control that contains estrogen
text: A 2013 review of studies noted a small but well-documented increase in the risk of stroke among people with migraines who use birth control that contains estrogen.
text: A person who has migraines with auras and who takes birth control that contains estrogen may have a further risk of stroke if they: are over the age of 40