Krebs was born in Hildesheim (North Germany) and graduated (MD) from the University of Munich in 1923. He was assistant to Otto Warburg (1926-30) who taught tissue slicing and manometry which Krebs used to complete his three great works: The Detoxification of Ammonia (Freiburg im Breisgau 1933), The Degradation of Foods to provide Energy for Life (Sheffield 1937) and Gluconeogenesis (Oxford 1963). He was elected Fellow of the Royal Society of London (FRS) in 1947, Nobel Laureate in 1953 and KBE in 1958.