This is a very important point. Also other point is that in some hospitals people are going into ER with hiponatremia. Granted extreme cases. But many people are getting obsessive with low Na. And while a little bit too much will not affect you at all, a little bit too little will affect you immediately.

FoodTV and other influencers also drove a lot of people to kosher salt, which isn’t iodized.

There are plenty of other sources for iodine.

Not really, at least not everywhere. If you live away of sea, you will bot be inclined to eat seafood, also will be expensive. There are many cultures in which the diet does not have enough iodine.

Sure, if you live in a country with submodern infrastructure, doesn't produce enriched wheat, or cannot afford to buy an iodine supplement, you are probably right.

However 1 cup of milk has more iodine than 1/4 teaspoon of iodized salt, 1 egg has half as much, and two slices of enriched wheat bread has three times as much.

Also, a typical kelp supplement has way more than the RDV, in a single pill.

> Sure, if you live in a country with submodern infrastructure

That describes a whole lot of world population.

Yet, not a whole lot of the hacker news user population.

Which?

Primarily seafood.

You can get it from a lot of other places, but they are unreliable. Plants grown in iodine rich soil will have iodine, but good luck identifying that.

I use iodized salt because I don't love the alternatives.

Seaweed has plenty of iodine