Anemia什么意思

"Anemia" is a medical term that refers to a condition characterized by a low red blood cell count, low hemoglobin levels, or low hematocrit (the proportion of red blood cells in the blood). Red blood cells and hemoglobin are essential for carrying oxygen from the lungs to the body's tissues, and for carrying carbon dioxide from the tissues to the lungs. When these levels are low, not enough oxygen can be delivered to the body's organs and tissues, which can lead to fatigue, weakness, shortness of breath, and other symptoms. Anemia can be caused by a variety of factors, including iron deficiency, vitamin deficiency, blood loss, certain diseases, and certain medications.