Rumor Refutation：8 Rumors About Voluntary Blood Donation

Rumor 8 :When a person loses blood, their immunity decreases, and they lose many white blood cells.

/✗:This is a wrong statement

Blood donation does not affect the human immune system. Physiologically, the main substance (constituting) human immunity is white blood cells. Red blood cells make up a larger proportion of human blood, while white blood cells are only a part of it.

For example, a normal adult donating 200-400ml of blood will only lose 1%-2% of their total white blood cells, which can be replenished from the bone marrow within 1-2 hours.