Vitamin K is the fourth and final fat-soluble vitamin. Vitamin K is actually a generic name for a group of vitamins known as quinones. Though it plays a part in the bone mineralization process, Vitamin K is probably most famous for its role in the blood clotting process. Those taking warfarin (Coumadin®) do so to prevent dangerous blood clots from forming. While on this medication, the patient is usually followed by a medical team that monitors the viscosity, or thickness, of their blood. Another component that is watched closely is the amount of Vitamin K that is eaten on a regular basis. This is measured using the prothrombin time (PT) – the amount of time it takes to form a blood clot. Contrary to popular belief, you do not have to avoid foods that are high in Vitamin K completely; in fact, it is recommended that individuals taking warfarin maintain consistent levels of the vitamin. Vitamin K mainly comes from leafy, green vegetables, which have many other health benefits.
Here are some popular sources of Vitamin K:
- Broccoli
- Kale
- Parsley
- Spinach
- Canola Oil
- Olive Oil
Supplementing with Vitamin K is not necessary as deficiency is rare, though a supplemental dose may be given to those who have received too much warfarin and are at risk of excessive bleeding. However, deficiency is common in newborns; since Vitamin K does not cross the placenta easily, they are given a single injection of the vitamin at birth in order to boost their levels. Deficiency is also common in those who have trouble absorbing fat, those who overconsume alcohol frequently, and those who have a chronic, gastrointestinal disorder (e.g. Crohn’s Disease). Additionally, excess amounts of Vitamins A and E can block the absorption of Vitamin K.
I cannot stress enough how important it is to meet with a health professional and attend follow up appointments, especially if you are considering taking supplements. Self-medicating can sometimes put you in a position that is worse than where you’ve started, and you will save a lot of time and money by speaking with trained professionals first.
If you are concerned about your nutritional status, or would like to make sure that you are getting your fair share of vitamins, schedule a consultation with me today!
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