Vitamin B12 plays several roles in your body. It not only helps enhance energy and boost metabolism, but it also works towards the development of brain and nerve cells, while also facilitating the production of DNA.
Given that our bodies cannot produce Vitamin B12, the best way to get sufficient amounts of this vital nutrient is through natural sources like animal products consisting of seafood, eggs, poultry and some forms of dairy. That said, although certain veggies and legumes contain Vitamin B12, they do not provide as much nutrients as opposed to non-vegetarian foods.