vitamin B12
US /ˈvaɪ.t̬ə.mɪn biː twelv/
UK /ˈvaɪ.t̬ə.mɪn biː twelv/
1.
a vitamin found in animal products and some fortified foods, essential for nerve function, red blood cell formation, and DNA synthesis. Its deficiency can lead to anemia and neurological problems.
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Many vegans take vitamin B12 supplements because it's primarily found in animal products.
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A deficiency in vitamin B12 can lead to fatigue and nerve damage.