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Vitamin K: Benefits, Sources, and RDA

Watch more Vitamins and Vitamin Supplements videos: Subscribe to Howcast's YouTube Channel - Learn about Vitamin K benefits, the food sources that contain Vitamin K, and the RDA, in this vitamin supplements video from Howcast. Howcast uploads the highest quality how-to videos daily! Be sure to check out our playlists for guides that interest you: Subscribe to Howcast's other YouTube Channels: Howcast Health Channel - Howcast Video Games Channel - Howcast Tech Channel - Howcast Food Channel - Howcast Arts & Recreation Channel - Howcast Sports & Fitness Channel - Howcast Personal Care & Style Channel - Howcast empowers people with engaging, useful how-to information wherever, whenever they need to know how. Emphasizing high-quality instructional videos, Howcast brings you experts who provide accurate information in easy-to-follow tutorials on everything from makeup, hairstyling, nail art design, and soccer to parkour, skateboarding, dancing, kissing, and much, much more. Hi, I'm Molly Lee, and I'm founder and director of, a holistic health and nutrition practice based in New York City. The recommended daily allowance for vitamin K for healthy males aged 19 to 30 is a 120 micrograms per day. For females aged 19 to 30 years old, it's 90 micrograms a day. Vitamin K is a great supplement because it promotes proper blood clotting, prevents bleeding and hemorrhages and also helps improve bone density, so it's a great way to prevent osteoporosis. One additional benefit of vitamin K is that it can prevent the hardening of the arteries, which can lead to heart disease and heart failure. Some great natural sources of vitamin K include dark leafy greens such as kale, collards, and broccoli, olive oil, avocado, strawberries, beans, and eggs. If for some reason you're not getting enough vitamin K from your natural food sources, it's a good idea to consider taking vitamin K in a supplement form, that way you make sure you're getting everything you need.
Length: 01:09


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