High haemoglobin a risk factor for stroke and heart attacks: Experts

 NEW DELHI: High haemoglobin levels can raise your risk of heart attack, stroke, and blood clots, according to health experts.

Known as polycythemia, it is a condition where red blood cells increase in the human body due to abnormalities in the bone marrow. These excess cells thicken the blood, slowing its flow and causing serious problems like blood clots.

Other causes of polycythemia include smoking, diseases of the heart or lungs, and living at high altitude for prolonged periods of time.

Haemoglobin levels of more than 16.5 g/dL in males and 16 g/dL in females are considered abnormal. High haemoglobin levels may be detected on routine blood tests and may not cause any symptoms.

“High haemoglobin levels should not be ignored as they can increase the risk of blood clotting and can sometimes lead to dangerous conditions like stroke, heart attack, and blood clots in the legs and abdomen,” said Dr. Rahul Bhargava, Principal Director of Haematology and Bone Marrow Transplant, Fortis Memorial Research Institute, Gurugram.

“If high haemoglobin levels are detected on routine evaluation, a hemologist should be consulted for further evaluation. Secondary causes of polycythemia, including obstructive sleep apnea and diseases of the heart and lungs, should be looked for,” he added.

Routine blood tests to detect haemoglobin levels include a peripheral smear, serum erythropoietin levels, and a JAK2 mutation study.

A bone marrow examination is also performed to determine the cause of polycythemia in selected cases.

According to Dr. Neha Rastogi Panda, Senior Infectious Diseases Specialist at Fortis Memorial Research Institute, Gurugram, “high haemoglobin may also cause a variety of symptoms like frequent headaches, blurred vision, itching all over the body after a warm shower, and painful and swollen joints”.

“It can also cause major problems like stroke, heart attack, blood clots in the legs, etc. Smoking should be avoided, as it increases the risk of blood clotting. Diabetes and high blood pressure should be controlled, as they are independent risk factors for stroke and heart attack. Adequate oral fluid intake should be maintained,” she added.

Treatment of polycythemia includes removing blood from the body (a process called phlebotomy), blood thinners like aspirin, which helps prevent blood clotting, and medicines like hydroxyurea, which help stop bone marrow from producing more cells. (IANS)

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