A new study reports that birth control pills containing drospireone- found in the birth control Yaz and Yasmin- may carry a higher risk of blood clots than older birth control pills. All oral contraceptives increase risks for blood clots. These newer pills, however, increase the risk of blood clots from 43% to 65%. The authors note that the risk of a blood clot is highest in the first few months of being on the pill. So, if you’ve been on Yaz or Yasmine for over 4-months without a problem, you’re likely in the clear.  But, if you’re deciding on what pill to start and/or you have risk factors for clot development- smoke, older than 25, genetic disposition towards clotting- Yaz or Yasmin may not be the safest choice.