Vitamin K was discovered in 1929 as an essential nutrient for blood coagulation, which is the scientific term for blood clotting.
The initial discovery was reported in a German scientific journal, where it was called “Koagulationsvitamin.” That’s where the K in vitamin K comes from .
It was also discovered by the dentist Weston Price, who traveled the world in the early 20th century, studying the relationship between diet and disease in different populations.