Vitamin B12, also called cobalamin, is a water-soluble vitamin essential for the proper functioning of the human body.


Vitamin B12, also known as cobalamin, is a water-soluble vitamin essential for the normal functioning of the brain, the nervous system, and blood formation. It is one of the eight B vitamins.

Biological Functions:

  • Red Blood Cell Formation: Vitamin B12 is necessary for the normal formation of red blood cells in the blood.
  • Nervous System Function: It plays a crucial role in the normal functioning of the nervous system.
  • DNA Synthesis: B12 is involved in DNA synthesis, contributing to cell growth and cell division.
  • Food Sources: Vitamin B12 is primarily found in animal-derived products such as meat, fish, eggs, and dairy products.
  • Absorption: Vitamin B12 requires a protein called intrinsic factor, produced in the stomach, to be efficiently absorbed in the small intestine.
  • Daily Requirements: The daily requirements for vitamin B12 vary depending on age, gender, and other factors.
  • Vitamin B12 Deficiency: A deficiency in vitamin B12 can lead to various health problems, including anemia, neurological issues, and cognitive disorders.
  • Supplements: Individuals having difficulty obtaining enough vitamin B12 through diet, especially those following a vegan diet, may require supplements.

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