Please explain what processes are happening in simple form

Thanks Just thinking, I appreciate your prompt and detailed input. I'd like to ask a few questions to understand the process... so my sensitivity is related to detox and Iodine is prompting the detox is this correct? And eventually when my body is supported and detoxing ... is the purpose of Iodine to help the brain think better again as well
As other tasks related to thyroid? Is reaction in various sites related to bacteria/toxin/ fungus die off? I think answers to these will help me a) be motivated and b) work towards health via deeper understanding... maybe this are simplistic questions but my head is rather overwhelmed at mo ... I appreciate your time and input
Also could you tell me if gradual accumulation of Iodine seems to be causing flare ups? - I thought I was doing ok having one drop a day...we the dull headache but then bame... full blown flare up being overwhelmed