Vitamin K is a fat-soluble vitamin the body uses for normal blood clotting and for maintaining bone; K1 (phylloquinone) comes mainly from leafy green vegetables.
摂取が少ないとき
Low vitamin K status is uncommon and is commonly discussed in relation to easy bruising and longer bleeding times, more likely among people with fat-absorption problems.
摂取が多いとき
Vitamin K from food has not been shown to cause harm and has no established upper level; a steady, consistent vitamin K intake is a widely discussed topic for people taking the anticoagulant warfarin.