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Vitamin B12: Benefits, Sources, and RDA

Watch more Vitamins and Vitamin Supplements videos: Subscribe to Howcast's YouTube Channel - Learn about Vitamin B12 benefits, the food sources that contain Vitamin B12, 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 B-12 for healthy adults age 19 to 30 years old is 2.4 micrograms per day. It's known as the energy vitamin because it helps boost your metabolism and energy in the body. Vitamin B-12 also balances the nervous system, helps prevent depression, improves moods, and also protects against cancer. It also helps you form healthy hair, skin, and nails and is essential for cell division and blood formation, which helps prevent anemia. Vitamin B-12 is very important for pregnant or lactating women and infants and children. Since it's only found in mainly animal products, strict vegetarians and vegans also want to make sure that they're getting enough vitamin B-12. If you fall into any of these categories, definitely consider taking a vitamin B supplement.
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