What do all treatments for anemia have in common?

Anemia means the blood has too few healthy red blood cells (erythrocytes) or too little hemoglobin to carry oxygen effectively. Treatments vary depending on the cause—some address iron or vitamin B12 deficiencies, while others treat different underlying problems—but they aim to improve the blood’s ability to carry oxygen, commonly by increasing healthy erythrocytes. So the best choice is “They all aim to increase erythrocytes.”

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