A high hemoglobin amount is an increase in hemoglobin concentration, and an increased hemoglobin concentration is a hemoglobin concentration that exceeds the normal range. In general, the hemoglobin concentration is 120-160 g/L for adult males and 110-150 g/L for adult females. high hemoglobin concentration can be caused by a variety of reasons, for example, when the human body draws blood in the morning on an empty stomach, the hemoglobin concentration may be mildly high due to blood concentration, which is a normal change and does not require any treatment. In some long-term smokers, because smoking stimulates the proliferation of red blood cells, causing an increase in the number of red blood cells in the peripheral blood, there will also be an increase in hemoglobin concentration, and the increased hemoglobin concentration will gradually decrease to normal after quitting smoking. In addition, it is common in certain hypoxic diseases, such as chronic obstructive pulmonary disease and residents of highland areas due to long-term hypoxia, which stimulates the body to increase the concentration of erythropoietin, resulting in an increase in the number of red blood cells, which eventually causes an increase in the concentration of hemoglobin.