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www.reference.com/world-view/causes-red-blood-cell-count-low-b45af9f8b346c56b

One cause of low red blood cell count is pregnancy, but this is normal, according to Mayo Clinic. However, among the many other conditions and diseases that can cause a low red blood cell count are cancer, aplastic, vitamin-deficiency and iron-deficiency anemia, internal or external bleeding and por

www.reference.com/world-view/symptoms-having-low-red-blood-cell-count-4ab6d8840afc1142

A low red blood cell count, most often referred to as anemia, can cause weakness, fatigue, dizziness, fainting, lack of energy, pale skin, rapid heart rate or palpitations and shortness of breath. Chronic anemia in children may cause learning problems and increased risk of infection, says MedicineNe

www.reference.com/world-view/low-red-blood-cell-count-mean-fd855c499f036910

A low red blood cell count means cells in the body are not receiving enough oxygen. Anemia is the most common cause for an abnormally low amount of red blood cells, affecting 3.5 million Americans, as reported by WebMD.

www.reference.com/article/low-blood-cell-count-side-effect-cancer-treatment-aa4ea7329fdcbd25

Chemotherapy and radiation therapy may cause low blood cell count, Mayo Clinic states. Cancer may also be a direct cause of low blood cell count if the patient has blood and bone marrow cancer or cancer of another type that spreads to bone marrow.

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A normal red blood cell count for males is 4.7 to 6.1 million cells per microliter, and a normal count for females is 4.2 to 5.4 million cells per microliter, states MedlinePlus. Normal ranges may vary from lab to lab, and some labs may use a different form of measurement.

www.reference.com/world-view/high-red-blood-cell-count-mean-cancer-patient-77658d20e04a0628

For a cancer patient, a high red blood cell count can mean that the cancer has spread to the kidneys, resulting in renal cell carcinoma, explains Healthline. However, it can also indicate that an individual is merely dehydrated or taking certain drugs that can raise red blood cell counts.

www.reference.com/article/treatments-low-red-blood-cell-count-ecbfa2b95ace2489

Common treatments for low red blood cell counts include blood transfusions, medications and stopping the other treatments that are causing the cell count to decline. As low red blood cell counts are often a side effect of chemotherapy, in extreme cases, a delay of cancer treatment may be the best co

www.reference.com/article/causes-high-red-blood-cell-count-6720c67fa5e3ffa1

Genetic mutations, both inherited and acquired, are one primary cause of high red blood cell counts, also known as polycythemia, says MedicineNet. Sleep apnea and tumors are secondary causes of polycythemia.

www.reference.com/world-view/symptoms-high-red-blood-cell-count-16ef92fe1e539b2c

Typical symptoms of a high red blood cell count include fatigue and weakness, joint pain, itching and headaches, according to MedicineNet. In cases where this condition is accompanied by risk factors such as cancer of the kidney or liver, fullness and weight loss are common, says WebMD.

www.reference.com/article/red-blood-cell-count-tell-e25317bafc25535

A red blood cell count indicates how many red blood cells a person has, according to MedlinePlus. Doctors use it to diagnose conditions such as anemia, as well as other medical conditions. A normal range of red blood cells for women is 4.2 to 5.4 million cells per microliter, while a normal range fo