Explanation: The most important subtypes are MK-4 and MK-7. MK-4 may reduce calcification in the blood vessels, while MK-7 may help to promote bone health
1. Australia, O. (2019). Vitamin K | Osteoporosis Australia. [online] Osteoporosis.org.au. Available at: https://www.osteoporosis.org.au/vitamin-k [Accessed 17 Feb. 2019].
2. Leech, J. (2018). Vitamin K2: Everything You Need to Know. [online] Healthline. Available at: https://www.healthline.com/nutrition/vitamin-k2#what-it-is [Accessed 17 Feb. 2019].
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