Treating even mildly elevated, or non-severe, blood pressure during pregnancy reduces the risk of adverse pregnancy outcomes and is unlikely to harm the developing baby, according to a study. When compared with pregnant women whose mild hypertension wasn't treated, those who received medications to lower their blood pressure to less than 140/90 mmHg had about a 20% reduction in the combined rate of severe preeclampsia, preterm birth before 35 weeks, abruption and fetal or newborn death. The benefits of treating mild chronic hypertension, defined as high blood pressure that is less than 160/110 mmHg, remained even after controlling for other...