Too much blood: when transfusions do more harm than good

Blood transfusions have been identified as one of the most overused therapies both in the United States and the UK. In this podcast Lawrence Tim Goodnough, from Stanford University Medical Center's Transfusion Service, and Michael Murphy, from NHS Blood and Transplant, explain the physiological reasons why liberal blood transfusion will not benefit patients, and can potentially harm them. Read their full analysis: http://www.bmj.com/content/349/bmj.g6897