Brian M. Frier is a Scottish physician, diabetologist, clinical scientist, and an Honorary Professor of Diabetes at the University of Edinburgh. He is best known for his many scientific contributions to the pathophysiological understanding of hypoglycemia, a common adverse effect of insulin therapy in diabetic patients whose societal impact has deserved increasing media attention worldwide. His honors include the R.D. Lawrence Lecture of the British Diabetic Association (Diabetes UK) in 1986, the Banting Memorial Lecture at Diabetes UK in 2009, the Camillo Golgi Prize and lecture at the 53rd annual EASD conference in 2017, and the Michael Somogyi Award from the Hungarian Diabetes Association in 2004. Frier is a science book author and editor, and a science journal Chief editor. He is also