B-12 is a must-have vitamin that supports a healthy nervous system and helps the body produce energy from fats and proteins. It's also crucial for DNA synthesis during cell division, making it especially important for rapidly multiplying cells like blood cells.
In addition, adequate intake of vitamin B-12, along with folic acid and vitamin B-6, is critical for the conversion of homocysteine to methionine, thereby supporting a healthy cardiovascular system. While B-12 is stored in the liver, dietary sources are of animal origin only (meat and dairy). Therefore, supplementation with B-12 may be especially important for strict vegetarians.