Anemia happens when your blood doesn't carry enough oxygen to your body's tissues. This occurs because you either don't have enough red blood cells, your red blood cells don't contain enough hemoglobin (the protein that holds oxygen), or both. The causes range from simple iron deficiency to chronic diseases, genetic conditions, and medication side effects. Understanding what's happening in your blood—and why—helps you recognize symptoms like fatigue, shortness of breath, or pale skin, and work with your doctor on what comes next.

These articles explain how different types of anemia develop, what symptoms to watch for, and how doctors identify which kind you have. You'll learn what blood tests show, how treatments differ depending on the underlying cause, and what dietary or lifestyle changes might matter for your situation.