Vitamin B12 TestMeasure the level of vitamin B12, an essential vitamin that is necessary for making red blood cells, maintaining a healthy nervous system, and creating DNA. Read more
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Vitamin B12 deficiency anemia is a condition in which your body does not have enough healthy red blood cells, due to insufficient amounts of vitamin B12. This vitamin is needed to make red blood cells (RBCs), which carry oxygen to all parts of your body. Your body cannot function normally without an adequate supply of oxygen-rich RBCs.
Vegetarians and vegans who want to increase their vitamin B12 intake may consider fortified foods such as nutritional yeast, cereal grains, and plant-based milk, or taking a B12 supplement to replenish the body's stores of this essential vitamin.