For the past 20 years pregnant women with an increased risk of developing blood clots have often been prescribed a common blood thinner to prevent serious complications from the clots, including preeclampsia (high blood pressure in the mother), disruption of the placenta, low birth weight and loss of the fetus. The largest randomized clinical trial to examine the therapy finds that the drug—low-molecular-weight heparin—is not effective.

READ FULL ARTICLE Curated publisher From Scientific American