It’s worth it for anyone to read the article. Plenty of circumstances that could lead to deficiency.
I think the “varied diet” usually means Americans get enough through non-home use iodized salt (like processed/restaurant foods). As the article says, seafood (plant or not) and dairy are good iodine sources, if you consume them.
I think the “varied diet” usually means Americans get enough through non-home use iodized salt (like processed/restaurant foods). As the article says, seafood (plant or not) and dairy are good iodine sources, if you consume them.