Intrauterine devices ( IUDs ) prevent unwanted bleeding . `` More research is definitely needed to study the biological mechanisms by which IUDs may induce this risk reduction , '' says the lead author of the study , Xavier CastellsaguÃ As an added benefit , they may also help protect against cervical cancer . Women who use them are roughly half as likely to develop cervical cancer .
Intrauterine devices ( IUDs ) prevent unwanted bleeding . As an added benefit , they may also help protect against cervical cancer . Women who use them are roughly half as likely to develop cervical cancer .