Health Conditions That Can Cause a High RBC Count:
Polycythemia Vera: This is a type of blood cancer that leads to an overproduction of red blood cells.116
Heart Disease: Certain heart conditions can lead to a high RBC count as the body tries to compensate for poor oxygenation.10
Lung Diseases: Respiratory diseases like chronic obstructive pulmonary disease (COPD) can cause low blood oxygen levels, prompting an increase in RBC production.10
Kidney Disease: Kidneys release erythropoietin, a hormone that stimulates RBC production. Certain kidney diseases can lead to excessive erythropoietin release.10
Bone Marrow Disorders: Conditions like polycythemia vera can cause excessive RBC production due to genetic mutations.21
Smoking: Smoking can lead to a higher RBC count as the body attempts to compensate for the carbon monoxide in tobacco smoke, which decreases blood oxygen levels.10
Dehydration: This can lead to a temporary increase in RBC count due to a reduction in plasma volume, making the blood more concentrated.10
Living at High Altitudes: The body compensates for lower oxygen levels by producing more RBCs.22