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  1. Vitamin B-12 - Mayo Clinic

    Jun 28, 2024 · Vitamin B-12 (cobalamin) plays an essential role in red blood cell formation, cell metabolism, nerve function and the production of DNA, the molecules inside cells that carry …

  2. Vitamin B12 Deficiency: Causes, Symptoms, and Treatment

    Apr 30, 2017 · Vitamin B12 is essential for good health, but some people may not be getting enough. WebMD tells you about symptoms of a vitamin B12 deficiency and how it can be treated.

  3. Vitamin B12 - Wikipedia

    Vitamin B12, also known as cobalamin or extrinsic factor, is a water-soluble vitamin involved in metabolism. [2] One of eight B vitamins, it serves as a vital cofactor in DNA synthesis and both …

  4. Signs and Symptoms of Vitamin B12 Deficiency - Healthline

    Dec 14, 2023 · Vitamin B12 is an essential nutrient that your body needs for processes like DNA synthesis, energy production, and central nervous system function (1). Studies suggest that up …

  5. Vitamin B12 is found naturally in a wide variety of animal foods, and manufacturers add it to some fortified foods. Plant foods have no vitamin B12 unless they are fortified. You can get …

  6. Vitamin B12 Benefits and Best Sources - Cleveland Clinic Health …

    Jun 8, 2022 · From boosting energy to helping with brain function, this vitamin is found in many foods. If you want to increase your intake of vitamin B12, put down that bottle of vitamins! …

  7. Normal B12 Levels (By Age) Vs. Optimal Range • PA Relief

    In most countries, the lower vitamin B12 range of what’s considered normal levels is too low (100-250), often missing severe deficiencies. People show signs of B12 deficiency even at higher …

  8. What Happens to Your Body When You Take Vitamin B12

    Jul 10, 2024 · Vitamin B12 is essential for numerous body functions. Read on for what vitamin B12 is, the benefits, potential risks, side effects and more.

  9. 8 Foods That Are Naturally High in Vitamin B12 - Verywell Health

    Jul 1, 2025 · Vitamin B12 is an essential nutrient. Here are the best food sources of vitamin B12, as well as fortified alternatives for vegetarian or vegan diets.

  10. Vitamin B12: Purpose, benefits, and sources - Medical News Today

    Jun 11, 2025 · Vitamin B12 (cobalamin) is essential for the health of nerve tissue, brain function, and red blood cells. Sources include meat, eggs, and some yeast products.

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