What is Vitamin K?
Vitamin K is a water-soluble vitamin that comes in two main forms, K1 and K2. The bacteria in our gut are able to convert vitamin K1 into vitamin K2, which can then be used by the body in a variety of ways. Vitamin K1 is found most commonly in green leafy vegetables, although there are plenty of other dietary sources.
Vitamin K has an impressive list of health benefits which include:
- Boosting bone density
- Protecting against osteoporosis
- Maintaining cardiovascular health
- Preventing cancer
Foods High in Vitamin K
Green Leafy Vegetables
When it comes to high levels of vitamin K, few things are better than green leafy vegetables, which deliver an average of more than 400 micrograms in half a cup! That is more than 4 times the typical recommendation per day.
1 cup of prunes offers 104 micrograms of vitamin K, which is just over 100% of your daily requirement (using 100 micrograms as the average recommendation).
One of the green leafy vegetables with the most vitamin K, a single cup of kale offers more than 1100% of our daily requirement in this nutrient.
There are 21 micrograms of vitamin K in every 100 grams of avocado, roughly 20% of the intake you need each day.
This popular vegetable contains roughly 60% of the daily requirement for vitamin K in 1 medium-sized cucumber.
A single serving of brussels sprouts contains more than 240% of the daily requirement for vitamin K.
Despite only have 36 calories per serving, Swiss chard will deliver more than 600% of the recommended vitamin K intake per day.
Vitamin K Dosage
Generally, there is not an upper limit on the amount of vitamin K one can consume per day. Although the exact amount may vary based on age and gender, most people are recommended to consume between 75 and 120 micrograms of vitamin K each day.
Note: When people take vitamin K in supplement form, there have been limited reports of allergic reactions. It’s best to stick to food sources of vitamin K. Always talk to your doctor before taking it in supplement form.