Eli5- why if you have a blood disease can you not replace your blood?

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Like if you have sickle cell or blood cancer or things can you not just like use a dialysis machine to take out your sick blood and do new clean blood?

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Anonymous 0 Comments

Blood cancer isn’t really blood cancer. It’s white blood cell cancer. Most of those cells aren’t in the blood so replacing the blood won’t help. You need to replace your bone marrow or treat it with chemotherapy and radiotherapy until there’s no cancer cells in it.

For sickle cell anemia, blood transfer can help. It’s a treatment you need to repeat though. It doesn’t cure it.

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