[hiroshi3110]

In Japan, iodized salt is banned as a food additive. because we can take it from see weeds like kombu.

[ycombinatrix]

Why would that be a reason to ban iodized salt?

[slongfield]

Too much iodine can lead to thyroid problems, and this has been a problem in some subgroups in Japan: https://academic.oup.com/jcem/article/107/6/e2634/6516999

[xiande04]

Even without iodized salt, Japan is one of the highest consumers of iodine worldwide. [1]

But I agree. Even though iodized salt is pointless in Japan, so is the law banning it (assuming OP is correct, and it is in fact banned).

[1]: https://anaturalhealingcenter.com/documents/Thorne/articles/...