That is why I believe it physically damaged my gastric and intestinal mucosal cells.
Did you have a look at the study I posted in my original post?
Lugols clearly can damage the gastric mucosal cells. The intestinal mucosal cells are structurally related and may also be damaged by it.
Damage to the mucosal cells would then affect the gut bacteria because they require those cells to be intact to thrive. In fact, many of them can feed off of the mucin that is produced by those cells.
I believe this is what was happening.
EDIT: Also, there is no way I was detoxing from the iodine. I had been taking 50mg per day since January and I avoid fluoride and bromide like the plague. Definitely not detox. My mental symptoms only showed up in late August.