why does anemia cause hypertension

Anemia can result in hypertension, primarily due to the body's response to oxygen deprivation. When there is a decrease in the number of red blood cells or hemoglobin levels in the blood, the heart must work harder to compensate for the reduced oxygen delivery, potentially leading to elevated blood pressure.

More specifically, during anemia, the reduced number of red blood cells lowers the blood's oxygen-carrying capacity. To meet the oxygen demands of tissues and organs, the body increases heart rate and myocardial contractility to boost cardiac output. This, in turn, raises blood flow velocity and pressure, which may lead to the development of hypertension over time. Moreover, anemia can also activate the renin-angiotensin system within the body, further promoting vasoconstriction and blood pressure elevation.

Therefore, individuals with anemia should actively seek treatment for their condition and monitor their blood pressure closely, with regular checks on blood pressure levels. If hypertension symptoms arise, they should promptly consult a healthcare provider and follow a prescribed treatment plan under medical supervision, rather than self-medicating without guidance.