Wouldn’t a diet high in kelp lead to hyperthyroidism? This is a condition caused by too much iodine in the diet, and kelp is touted as the best way to obtain that iodine. But too much of anything is just as bad as too little of that which is absolutely required.
There are no final one-word answers for anything.
“Wouldn’t a diet high in kelp lead to hyperthyroidism?”
Probably, but don’t worry, big pharma will make a drug to fix that. lol