What is Vitamin B12? This important nutrient works to keep your blood cells and nerves healthy. It also plays a huge role in your energy levels. Vitamin B12 also works to help create that the DNA that makes up your cells. Vitamin B12 is not made by your body. It is absorbed from the animal foods you eat. Vegetarians and vegans require dietary … [Read more...] about Vitamin B12: Healthy Benefits, Diet and Risks