What is the most common cause of iron deficiency in men and postmenopausal women?

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Quizplus · Accepted Answer

Chronic blood loss, such as from gastrointestinal bleeding, is the most common cause of iron deficiency in both men and postmenopausal women. Poor diet and increased need can contribute to iron deficiency, but they are not the most common cause. Paroxysmal nocturnal hemoglobinuria is a rare genetic disorder that causes premature destruction of red blood cells and is not a common cause of iron deficiency.

What Is the Most Common Cause of Iron Deficiency in Men