
Vitamin B12 is part of the vitamin B complex and is essential for maintaining nerve function, fatty acid metabolism, and DNA and amino acid synthesis. By lowering homocysteine levels, it may also protect against cardiovascular disease. Vitamin B12 can be obtained through diet (including eggs, dairy products, poultry, meat, and fortified cereals) and in supplement form. Deficiency of B12 can lead to a wide variety of hematologic, neurologic, and psychiatric disorders and may increase the risk of cardiovascular diseases. Clinical evidence to support the role of vitamin B12 in decreasing cancer risk is mixed. Further research is needed.




