What is the primary function of Vitamin B12?

The primary function of Vitamin B12 is the production of genetic material. This vitamin plays a crucial role in DNA synthesis and cell division, making it essential for the creation of new cells, particularly red blood cells. Vitamin B12 is involved in the metabolism of every cell in the body, particularly in the development and function of neurons and the production of neurotransmitters.

While energy production from carbohydrates is important, this is primarily the function of other B vitamins in the B-complex group, like B1 (thiamine) and B2 (riboflavin). Maintaining muscle tissue is influenced more by adequate protein intake and hormones than by Vitamin B12 specifically. Similarly, while vitamins do have roles in immune function, Vitamin B12's primary role is not considered to be the enhancement of the immune response. Thus, the correct focus on the production of genetic material underscores the critical biochemical pathways in which Vitamin B12 participates, highlighting its essential contributions to health and cellular function.