Can a supermagnet dangerously affect the iron in blood?

YouTuber Brainiac75 got a lot of questions about the possible dangers of a supermagnet affecting the iron in his blood, so he did an experiment with real blood.

Just as fascinating is his supermagnet experiment on new and burned matches.

The unboxing of the magnet was quite a production as well:

Monster magnet meets blood… (YouTube / Brainiac75)