Hemoglobin 70g/L suggests moderate anemia. The definition, causes and clinical symptoms of anemia are explained below. 1. The normal value of hemoglobin is ≥120g/L in men and ≥110g/L in women, below the lower limit of normal value is considered anemia, 70g/L suggests moderate anemia. 2. There are many causes of moderate anemia, the most common of which are nutritional anemia, such as iron deficiency anemia, megaloblastic anemia; hematopoietic cell abnormalities, such as aplastic anemia, myelodysplastic syndromes, leukemia, and other diseases can also cause anemia. In addition, hemolytic anemia due to various causes such as thalassemia and hemoglobinopathies can also be anemic. If the patient has bleeding hemorrhoids, chronic gastrointestinal bleeding or excessive menstruation, etc., anemia can also occur due to high blood loss. 3. Anemia patients will have symptoms such as dizziness, pale skin and mucous membranes, chest tightness, poor memory or nervous trance. Warm tips: hemoglobin 70g / L suggests moderate anemia, patients should actively find the cause of anemia, clear diagnosis under the guidance of the doctor’s treatment.