Shu Chien is an eminent American physiologist and engineer. His pioneering work on the fluid dynamics of blood flow has had a major impact on the diagnosis and treatment of cardiovascular diseases such as atherosclerosis. More recently, Chien's research has focused on the mechanical forces, such as pressure and flow, that regulate the behaviors of the cells in blood vessels. Chien is currently President of the Biomedical Engineering Society and is one of only 11 scholars who are members of all three U.S. national institutes: the National Academy of Sciences, National Academy of Engineering, and the Institute of Medicine. He was in Beijing, China in 1931. He received the National Medal Of Science in 2010.