Low hemoglobin levels usually indicate that a person has anemia. There are several kinds of anemia: Iron-deficiency anemia is the most common type. This form of anemia occurs when a person does not have enough iron in their body, and it cannot make the hemoglobin it needs.

What happens if Hb level is low?

In that way, the provider can treat the anemia and the cause. Iron-deficiency anemia is treated by increasing the amount of iron the patient gets, either with iron supplements taken by mouth or by eating more foods that are high in iron.

What level of hemoglobin is dangerously low?

Hemoglobin (Hb or Hgb) is a protein in red blood cells that carries oxygen throughout the body. A low hemoglobin count is generally defined as less than 13.5 grams of hemoglobin per deciliter (135 grams per liter) of blood for men and less than 12 grams per deciliter (120 grams per liter) for women.