Pre-eclampsia is a complication of pregnancy characterized by high blood pressure and signs of damage to the organ system. It may cause premature birth, and also in extreme cases, maternal and fetal death. Taking a low-dose of aspirin before bed may help to reduce the risk of pre-eclampsia in pregnant women, finds a trial led by Professor Kypros Nicolaides, King''s College London along with Professor David Wright of the University of Exeter.