What Are the Causes of B12 Deficiencies?
Vitamin B12, also known as cobalamin, is a water-soluble vitamin that is an essential component in the formation of red blood cells, proper nerve function and the synthesis of DNA, according to the Mayo Clinic. Vitamin B12 is present in foods such as fish, meat and dairy products. Nutritional deficiency of vitamin B12 is rare because the body is normally able to store B12 for a number of years. However, there are some conditions and situations that can cause a B12 deficiency.