system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does taking the contraceptive pill reduce the risk of ovarian cancer?
gpt
Every time a woman ovulates, her ovaries sustain a bit of damage due to the egg rupturing out of the ovary. OCPs decrease the number of lifetime ovulations which decreases the risk of ovarian cancer, since you decrease the number of lifetime damage.