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Vitamin K: A little-known but noteworthy nutrient

  • Written by Kyla Shea, Scientist I, Vitamin K Research Team at the USDA Human Nutrition Research Center on Aging at Tufts University, Tufts University
Vitamin K: A little-known but noteworthy nutrientMany plant-based foods are high in vitamin K.ratmaner via Getty Images

When Danish scientist Henrik Dam fed a cholesterol-free diet to baby chicks in his lab about 90 years ago, he noticed excessive bleeding in some of them. It did not stop after he replaced the cholesterol. Dam ultimately concluded the bleeding was related to a “depletion of...

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