The Benefits of Vitamin B12: A Comprehensive Guide.

Vitamin B12 is a water-soluble nutrient that helps keep blood and nerve cells healthy, aids in the production of DNA, and contributes to energy, mood, cognitive function, and heart health. While it can help prevent megaloblastic anemia, there isn't strong evidence to support the notion that taking large amounts of vitamin B12 will increase energy levels. Deficiency can lead to nerve problems, lethargy, diminished cognitive abilities, some types of dementia, emotional disorders, and a loss of balance. Supplementation of the nutrient may be recommended for some adults, and it is felt to be exceedingly safe since there are no known toxic effects when administered in supplemental quantities.