BMJ Study Confirms Yaz Significantly Increases Clotting Risks

On October 25, 2011, The British Medical Journal published a study confirming previous findings that newer-generation birth control pills, specifically those containing the progestogen hormones drospirenone, desogestrel or gestodene, double the risk for venous thromboembolism (VTE), compared to older-generation contraceptives containing the progestogen hormone, levonorgestrel. Widely-used and incredibly popular brands like as Yasmin, Yaz and Ocella are all examples of the types of birth control pills currently under intense scrutiny by the U.S. Food and Drug Administration, as well as other regulatory agencies and watchdog groups.

The study, which was led by Dr. Ojvind Lidegaard of the University of Copenhagen, included approximately 1.2 million non-pregnant women between the ages of 15 and 49 with no previous history of thrombotic disease. The results revealed that women taking older-generation birth control pills were three times more likely to develop VTE, compared to those not taking any hormonal contraceptive. Alarmingly, however, women taking drospirenone-containing birth control pills were at six to seven times the risk for VTE compared to non-users. The data undoubtedly confirms that women taking newer-generation birth control pills are at an increased risk for developing potentially serious and even life-threatening blood clots.

VTE is a blood clot that forms deep within a leg vein, and can be especially dangerous (even deadly) if the clot travels to the heart, brain or lungs. Women taking a drospirenone-containing birth control pills, should be aware of the warning signs of VTE, which include continuous and severe leg pain, severe chest pain or shortness of breath.

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