Women who have had two or more abortions have a reduced risk of pre-eclampsia, according to a new study in the International Journal of Epidemiology. Pre-eclampsia affects 5 to 8 percent of all pregnancies and is characterized by high blood pressure, protein the the urine, swelling, sudden weight gain, and headaches, and can lead to more serious complications for the mother and baby. Women who have had two or more induced abortions reduced their risk for pre-eclampsia by 60 percent, and women who have had one abortion have a 16 percent reduced risk. The research showed that every normal pregnancy, even if it ends before birth, acts like a vaccine against pre-eclampsia in later pregnancies. [UPI]