What is the most common cause of anemia?

What is the most common cause of anemia?

• A. Iron deficiency
• B. Blood loss
• C. Sickle cell disease
• D. Aplastic anemia

Answer: (B)

Iron deficiency anemia is the most common form of anemia because iron is essential for making hemoglobin, and stores are often exhausted before other causes become apparent. When iron is scarce, the bone marrow can’t produce normal hemoglobin, so red blood cells become smaller and paler (microcytic, hypochromic), and overall hemoglobin falls. Common triggers include chronic blood loss (such as heavy menstrual periods or GI bleeding), inadequate dietary iron, or problems with iron absorption. In medical workups, you typically see a low hemoglobin with a low mean corpuscular volume, low ferritin, and high transferrin iron-binding capacity. Treatment centers on replenishing iron stores with oral or IV iron and addressing the source of iron loss. While substantial blood loss can lead to iron deficiency, it is the depletion of iron stores itself that is the most frequent cause of anemia.

Iron deficiency anemia is the most common form of anemia because iron is essential for making hemoglobin, and stores are often exhausted before other causes become apparent. When iron is scarce, the bone marrow can’t produce normal hemoglobin, so red blood cells become smaller and paler (microcytic, hypochromic), and overall hemoglobin falls.

Common triggers include chronic blood loss (such as heavy menstrual periods or GI bleeding), inadequate dietary iron, or problems with iron absorption. In medical workups, you typically see a low hemoglobin with a low mean corpuscular volume, low ferritin, and high transferrin iron-binding capacity. Treatment centers on replenishing iron stores with oral or IV iron and addressing the source of iron loss. While substantial blood loss can lead to iron deficiency, it is the depletion of iron stores itself that is the most frequent cause of anemia.