The history of how the birth control pill was developed in the 1950s is recounted in Jonathan Eig's new book The Birth of the Pill. iStockphoto.com hide caption

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Exercise helps lower stroke risk, but birth control pills and pregnancy can be problematic for younger women. iStockphoto hide caption

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Insurers still charge copays for some contraceptives. Laura Garca/iStockphoto hide caption

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Estrogen affects cells in the eye's retina, which may help explain a possible link between glaucoma and estrogen levels. iStockphoto.com hide caption

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The Plan B One-Step morning-after pill will now be available to women as young as 15 without a prescription, and will have another three years of protection from generic competition. AP hide caption

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Baltimore Archbishop William Lori gave voice to a letter Catholic groups sent to the administration and Congress to protest insurance rules for contraceptives. Patrick Semansky/AP hide caption

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