What is a common treatment for anemia?

Anemia is a condition characterized by a deficiency in the number or quality of red blood cells, which results in reduced oxygen transport throughout the body. One of the most common causes of anemia is a lack of iron, leading to iron-deficiency anemia. In these cases, iron supplements are often prescribed to replenish the body's iron stores and help increase the production of red blood cells.

Additionally, another type of anemia can be caused by a deficiency in vitamin B12, which is essential for proper red blood cell formation. Vitamin B12 supplements can be used to address this type of anemia. Therefore, the use of iron or vitamin B12 supplements is a direct and effective treatment for these forms of anemia, making this option the most appropriate choice in response to the question.