<prompt> All the following are non-contraceptive benefits of OC pills exceptReduces dysmenorrheaReduces fibroadenomasReduces ovarian cancer riskDecreased risk for venous thrombosis  <response>: Established and Emerging Noncontraceptive Benefits of Oral ContraceptivesEstablished BenefitsMenses-relatedIncreased menstrual cycle regularityReduced blood lossReduced iron-deficiency anemiaReduced dysmenorrheaReduced symptoms of premenstrual dysphoric disorderInhibition of ovulationFewer ovarian cystsFewer ectopic pregnanciesOtherReduced fibroadenomasfibrocystic breast changesReduced acute pelvic inflammatory diseaseReduced endometrial cancerReduced ovarian cancerEmerging BenefitsIncreased bone massReduced acneReduced colorectal cancerReduced uterine leiomyomataReduced rheumatoid ahritisTreatment of bleeding disordersTreatment of hyperandrogenic anovulationTreatment of endometriosisTreatment of perimenopausal changesWomen who use estrogen-containing hormonal contraceptives are at increased risk for venous thrombosis and thromboembolism. Reference: Novaks gynaecology; 14th edition; Chapter 10; Family planning 