Oral contraceptives, a combination of synthetic oestrogen and progestin hormones, are well known for effective birth control since the 60s. As it turns out oral contraceptives may have another role to play in women’s health: for several years they were suspected to have a protective effect against some forms of cancer, such as ovarian or endometrial cancer, at the expense of an increasing the risk of others, such as breast and cervix cancer.

Since most studies demonstrating these controversial roles in different cancers were generally weak or biased due to a relatively small number of patients studied, the results have not convinced scientists and physicians on the true effects of oral contraceptives in cancer prevention or progression.

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