There is a lot of talk around reddit about Iodine lately namely these:

https://www.reddit.com/r...at_i_didnt_start_taking/

https://www.reddit.com/r...essential_nootropic_a_7/

https://www.reddit.com/r...tion_is_blowing_my_mind/

https://www.reddit.com/r..._iodine_supplementation/

https://www.reddit.com/r...only_nootropic_that_has/

https://www.reddit.com/r..._of_iodine_for_a_couple/

Some people get really bad reaction from it and some get a really good reaction from it it seems. Some entities recommend 150mcg to 1mg, and others tell us to eat 12mg and even higher...

Anyone dug into the science of it and can clear the shade, because as of yet it trully looks like a jungle and I dont know what to believe..

Both the EFSA and the NAM recommend an intake of 150 micrograms/day for adults.
Reddit is not a reliable source for medical/nutritional advice.

My bad, I merely posted those reddit links for anecdotes and more discussion, my main focus were books written by researchers and doctors namely these two

Iodine : Why You Need It, Why You Can't Live Without It by David Brownstein

also

The Iodine Crisis: What You Don't Know About Iodine Can Wreck Your Life by Lynne Farrow

They seem books written by self-appointed or fringe researchers just to make money from them. Fear mongering title is a hint in that direction. Sorry if I come off as harsh.

no no thank you thank you, its good reply definitely

ill try to dig up the studies they rely on and post that too in the following few days

In some regions in japan they consume up to 15mg daily but that's a lot of sea vegetables.
I supplement nascent Iodine 3 - 5 drops a day which is 400mcg per drop for 5 days a week.
I do this for 3 - 6 months (to load up) then stop for few months and just eat sea vegetables few times a week with my meals.