Misty apart from staying indoors etc there must be things a human c an do you be protective against the geomagnetic and mountains effects?

For example number 1 would be to get to the least active area you could find

But other stuff like would iodine help protect against any radiation effects?
Obvious things like extra vit d, c, k, e , a, selenium, for the immune system, medicinal mushrooms like relishing/chaga/cordyceps/lions mane ?
Electrolytes
Cbd
Turmeric

Some humans have survived these shifts before so they must be able to get through without getting too sick? I wonder why?