What causes red blood cells to be made?

The production of red blood cells is stimulated by a hormone called erythropoietin (EPO). EPO is produced by the kidneys in response to low oxygen levels in the blood. When the oxygen levels in the blood drop, the kidneys release EPO, which stimulates the bone marrow to produce more red blood cells. Red blood cells carry oxygen from the lungs to the rest of the body, so increasing their production helps to improve oxygen levels in the blood.

The production of red blood cells is also affected by other factors, such as:

- Iron deficiency: Iron is an essential mineral for the production of red blood cells. A lack of iron can lead to anaemia, a condition in which the blood does not have enough red blood cells.

- Vitamin B12 deficiency: Vitamin B12 is another essential nutrient for the production of red blood cells. A lack of vitamin B12 can also lead to anaemia.

- Folate deficiency: Folate is a type of vitamin B that is also necessary for the production of red blood cells. A lack of folate can also lead to anaemia.

- Chronic diseases: Some chronic diseases, such as kidney disease and cancer, can lead to anaemia. This is because these diseases can damage the bone marrow or interfere with the production of EPO.

If you are experiencing symptoms of anaemia, such as fatigue, shortness of breath, or dizziness, it is important to see your doctor to get a blood test to check your red blood cell count. If you are diagnosed with anaemia, your doctor will recommend the appropriate treatment.