Some recently approved cancer treatments (particularly: for inoperaable brain cancer) are basedt on a recent discovery:
- The electric fields from changing magnetic fields interfere with chromosome segregation during mitosis.
- The affected cells generalluy do one of two things:
- Complete the division with missorted chromosomes - then both offspring cells commit suicide.
- Give up on cell division - then the new diploid cell commits suicide.
Cells not undergoing mitosis keep perking along just fine. (Perhaps this is why large-range electric fields aren't present in cells except during division: Electrical effects occur across membranes or in very close range between molecules - because the use of the fields in the chromosome segregation mechanism means any newly-evolving "feature" that involved long-range E-fields would kill the cell partway to evolving it.
This is great for brain cancer treatment: Essentially nothing is splitting except the cancer cells. Maybe you lose some nerve stem cells and have slightly lower brain plasticity over the coming decades - but that's a heck of a lot better than dying in agony and gradually-increasing dimentia over 6 months to a year.
But start poking at brains with this in the long term - especially brains of people under 21 or so, when the brains are still doing substantial interconnection and cell division - and you might start seeing some nasty damage.