Moreover, asking a healthy person to donate a part of their body to others.
Medicine can't guarantee 100%, which is reflected in much of the propaganda about donation focusing mostly on moral persuasion, while technical shortcomings are something to avoid discussing. The public can't be deceived, which is the most frustrating point for all medical personnel regarding this promotional strategy. If you deceive the public by saying that doing this has no side effects, and they find out that's not true, they'll completely question everything you say and hate you for it.
The propaganda says that now bone marrow transplants don't involve bone, but peripheral blood stem cells, which don't hurt and have no risks. But in reality, every donor receives an informed consent form before really donating, listing various risks and asking you personally to bear the consequences. This outrages lots of previously registered volunteers, who were never told about this during the propaganda.
