All estrogen releasing birth control devices, pills, implants and IUDs, are associated with a high risk of clots in the deep veins of the legs and pelvis, DVT, which can become dislodged and travel to the lung, PE, where they can cause death. If you watch the small print on TV ads this is clearly listed. Tummy Tuck surgery especially lasting over three hours is associated with a higher rate of blood clots and many surgeons therefore put their patients on blood thinners after surgery and emphasize walking to lower this risk. while opinions differ, we want to lower the blood clot risk to as low as we can get it and reducing excessive estrogen exposure from the outside such as by certain IUDs, polls and implants is preferable. I thoroughly inform my patients of this risk of their birth control and have them remove and stop it 3-4 weeks before a Tummy Tuck procedure.