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New generation of birth-control pills carries higher risk of blood clots

Catholic World News - April 22, 2011

A new generation of birth-control pills carries a higher risk that women will have blood clots, studies show.

Doctors say that women taking the new pills are 2 to 3 times more likely to develop blood clots than those using older oral contraceptives. The absolute risk remains low, doctors insist; for every 100,000 women taking the pills, only 31 would be expected to develop blood clots.

Since an estimated 50 to 80 million women worldwide take oral contraceptive pills, those statistics could point to an additional 15,000 to 25,000 blood clots.

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