What causes elevated hemoglobin levels?
Disease description:
I found that my hemoglobin level was high during a physical exam and I'm very concerned. I would like to know what causes elevated hemoglobin levels?
Doctor's answer (1)
Dr. Liu Feng
Hemoglobin is a protein in red blood cells responsible for carrying oxygen throughout the body. When blood tests show hemoglobin levels higher than the normal range, it may be caused by various factors:
- Newborn period: Newborns may exhibit elevated hemoglobin levels while adapting to the external environment.
- Altitude response: At high altitudes, where the air's oxygen content is lower, the body may produce a compensatory response to hypoxia, increasing hemoglobin levels.
- Blood concentration: Excessive sweating after intense exercise can lead to concentrated blood, resulting in elevated hemoglobin levels.
- Polycythemia vera: A bone marrow disorder that causes excessive production of red blood cells.
- Chronic lung diseases: Conditions such as chronic obstructive pulmonary disease (COPD) may cause long-term hypoxia, stimulating increased red blood cell production.
- Others: Long-term smoking, tumors, and hereditary diseases may also cause elevated hemoglobin levels.
Elevated hemoglobin levels may increase blood viscosity, impair circulation, and raise the risk of cardiovascular and cerebrovascular diseases. It is recommended to seek medical attention promptly.
