Vitamin K

Vitamin K has several important functions. For example, it's needed for blood clotting, which means it helps wounds to heal properly. There's some evidence that vitamin K is also needed to help keep bones healthy.

There are two types of Vitamin K; Vitamin K1 and Vitamin K2. Vitamin K1 is found naturally in green leafy food sources like Kale, Brocolli and Spinach. Vitamin K2 is found in fatty foods like egg yolks, sausages and liver.

Typically the most common noticeable impact of a Vitamin K deficiency is excessive bleeding. Whilst this might not be immediately apparent you would generally notice it when you get a cut that would clearly take a long time to clot and stop bleeding.

What is the difference between Vitamin K1 and K2?

Vitamin K2 absorbs into the body much better than Vitamin K1. The reason for this is because Vitamin K2 is a fat soluble vitamin and is, as a result, often found in fatty foods like egg yolks, fatty meats like sausages and cheese. Vitamin K1 is typically found from plant sources like spinach and broccoli.

The vast majority of Vitamin K that humans get naturally is in the Vitamin K1 form and this is why supplementing could be beneficial for some people.

What role does Vitamin K play in bone health?

Vitamin K plays an important role in the health of bones. It is often found that people with higher levels of Vitamin K have a higher bone denisty whereas people with low levels of Vitamin K are more at risk of having osteoperosis.

Vitamin K works with calcium to help form new bones and so having good levels of Vitamin K is essential, particularly if you've recently suffered from a broken bone.

Why is Vitamin K2 also called Menaquinone-7?

Menaquinone is the scientific name for Vitamin K2. There are a few different types of Vitamin K2 but Menaquinone-7 (or MK-7) has been found to be the most useful for people taking supplements. The reason MK-7 is preferred to, say, MK-4 is because it absorbs better and only needs to be taken once a day, whereas MK-4 supplementing would require multiple doses throughout the day to be as effective.

Where else can I learn more about Vitamin K?