"Oral contraceptive use and mortality after 36 years of follow-up in the Nurses’ Health Study: prospective cohort study"
"Conclusions
All cause mortality did not differ significantly between women who had ever used oral contraceptives and never users. Oral contraceptive use was associated with certain causes of death, including increased rates of violent or accidental death and deaths due to breast cancer, whereas deaths due to ovarian cancer were less common among women who used oral contraceptives. These results pertain to earlier oral contraceptive formulations with higher hormone doses rather than the now more commonly used third and fourth generation formulations with lower estrogen doses."
http://www.bmj.com/content/349/bmj.g6356
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