A recent study shows birth control users are 70 percent more likely to be on anti-depressants to ward of symptoms.
More than one million Danish women and teens women were tracked by researchers at the University of Copenhagen.
One form of birth control appeared to make women more depressed, and that's the patches.
Teenagers seemed to be more vulnerable than older women.
Experts are blaming the hormone, progesterone, for playing a role in women's depression.
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