Common Vein Problem Raises Clot Risk on the Pill

Common Vein Problem Raises Clot Risk on the Pill - FoxNews.com: Women who use the standard form of birth control pill may have a much higher than average risk of dangerous blood clots if they also have a vein malformation (stenosis) seen in a quarter of the population, California researchers say. Up to 25 percent of the healthy population has this narrowing.

Editor: The article does not indicate whether stenosis can be detected prior to a woman being prescribed the Pill.