Have you had your healthy portion of collard greens or spinach today, supplying you with plenty of vitamin K with its production of blood-clotting proteins activity? Happy 126th birthday to its discoverer, Prof. Carl Peter Henrik Dam, Danish biochemist who shared (with Edward A. Doisy) the 1943 Nobel Prize in Physiology/Medicine for research into antihemorrhagic substances and the discovery of vitamin K (1939). https://www.nobelprize.org/prizes/medicine/1943/dam/biographical/
