Vitamin B12 is important in the activity of certain enzymes within cells that control fat, amino acid and carbohydrate metabolism.

 Enzymes are substances that speed up reactions in the body.

 Metabolism involves breaking down certain substances to yield energy while synthesizing other substances that your body needs.

Vitamin B12 is essential for the body’s ability to produce genetic material, DNA and RNA.

 Vitamin B12 is essential for the body’s ability to utilize folate, and without being able to use folate properly abnormal blood cells are produced that are too large, too few in number, and unable to properly carry oxygen.

 Folate is another type of B vitamin containing folic acid.

Vitamin B12 helps maintain healthy nerve cells.

Nerve cells make up the central nervous system, and are used by the body to send messages and information from and to the brain from the different parts of the body.