Originally Posted by marinera
Sure. Take a bit of blood then find the most powerful magnet on the planet and see if makes move the blood even a tiny bit.On the other hand, if really magnets could attract blood, the consequence would be a blocked blood flow, not an improved blood flow.
Any point charge (in this case: ion) coming across a magnetic field will be subject to a Lorentz’ force. Effectively, this means that any ion that enters a magnetic field with a velocity perpendicular to the field will start to move in circles around the axis parallel to the magnetic lines.
A magnet placed sufficiently close to a blood vessel would in a very real way “collect” ions at its location. Logically, it should be possible that this would create an effect similar to osmosis and thus indeed cause more blood to flow in the area.
(What’s important to note here is that the increased blood flow would be a secondary effect caused by the local increase of ions, not the other way around as most sites that sell these things try to present it.)
You are correct, however, that this would result in blood being “pulled” to the magnet from all directions, though. So yes, it would create a sort of blockage - but isn’t that exactly what you’d want if your goal was to strengthen an erection?
Note: this is a strictly electrodynamic analysis of the situation. I can’t comment on whether or not it will work in praxis (though to be honest, I don’t see why it wouldn’t).