b12维生素

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www.mayoclinic.org

Vitamin B-12 - Mayo Clinic

Aug 13, 2025 · Vitamin B-12 is a vitamin the body uses to make and support healthy nerve cells. It's also used to make healthy red blood cells and the genetic material inside cells called DNA. Vitamin B-12 also is cal...

www.healthline.com

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 to 20% of people...

en.wikipedia.org

VitaminB12 - 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 fatty acid and amino ...

www.helimeds.com

Vitamin B12 Benefits and Side Effects: Dosage & Safety

Aug 21, 2025 · Vitamin B12 (cobalamin) is an essential water-soluble vitamin that your body can’t make on its own. It supports core processes like red blood cell production, nerve protection, and DNA synthesis—the rea...

nutritionsource.hsph.harvard.edu

Vitamin B12 - The Nutrition Source

Vitamin B12, or cobalamin, is naturally found in animal foods. It can also be added to foods or supplements. Vitamin B12 is needed to form red blood cells and DNA. It is also a key player in the function and developme...