Spotting pre-eclampsia, and debating obesity

A BMJ head to head article this week asks: "Are the causes of obesity primarily environmental?" John Wilding, Head of the Department of Obesity and Endocrinology at the University of Liverpool, and Tim Frayling, professor of human genetics at the University of Exeter, argue their cases. Also this week, David Williams, a consultant obstetric physician at University College Hospital London, explains why pre-eclampsia is easily missed.