Question

what are erythrocytes? ​

Answer 1

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A high red blood cell count may be a symptom of a disease or disorder, although it doesn’t always indicate a health problem. Health or lifestyle factors can cause a high red blood cell count.

Medical conditions that can cause an increase in red blood cells include:

Heart failure, causing low blood oxygen levels

Congenital heart disease (born with it)

Polycythemia vera (a blood disorder in which the bone marrow produces too many red blood cells)

Kidney tumors

Lung disease, such as emphysema, COPD, pulmonary fibrosis (lung tissue becomes scarred)

Hypoxia (low blood oxygen levels)

Carbon monoxide exposure (usually related to smoking)

Lifestyle factors that can cause a high red blood cell count include:

Smoking cigarettes

Living at a high altitude

Taking performance-enhancing drugs such as anabolic steroids (for example, synthetic testosterone) or erythropoietin