We all know that a certain amount of vitamins and minerals play an important role n keeping our body work at its best. All groups of vitamins are necessary and play an important role in the daily function of our bodies, and eating healthy foods such as fresh fruits and vegetables is the best way to get our vitamins to maintain proper nutrition. Vitamin B12 is a nutrient that helps keep the body’s nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak.