What Causes Low B12 Levels?
Vitamin B12 belongs to the group of eight vitamins referred to as the B-complex vitamins. It is water-soluble, which means that it dissolves in water in the body. Vitamin B12 plays important roles in DNA synthesis, nerve signal transmission and formation of red blood cells, according to the Office of Dietary Supplements. If left untreated, low levels of B12 in the body can eventually lead to a lack of red blood cells, called pernicious anemia, and permanent nerve damage.