Vitamin K protects the heart
https://www.lifeextension.com/magazine/2000/2/report
Vitamin K regulates calcium
Imagine a vitamin that could keep calcium in bones and out of arteries. In so doing, that vitamin could stop heart attack and osteoporosis at the same time. Sound incredible? Maybe, but research shows that vitamin K does exactly that. It works by regulating calcium. Bones need it, arteries can't stand it. Vitamin K accommodates both.