
a lack of iron in the blood can lead to iron-deficiency anemia, the most common nutritional deficiency in the world.

iron deficiency is the most common nutritional deficiency .the leading cause of anemia in the world.

there are many different kinds of anemia; iron deficiency anemia (ida) is the most.

iron deficiency anemia is the most common form of anemia.

iron deficiency is a common problem worldwide.
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