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by code_reuse 4095 days ago
> Nothing wrong with enjoying your sea salt - you'll probably get plenty of iodine from water, flour, milk, eggs, seafood, etc.

Seaweed an even more potent source of iodine, and the Japanese eat a lot of it. The concentration of iodine in these marine plants ranges from 0.5-8.0 mg/g. Terrestrial plants, in contrast, contain only trace amounts of iodine, 0.001 mg/g.

In 1964, the Nutrition Section of Japan's Bureau of Public Health found that people in Japan consumed a daily average of 4.5 g of seaweed with measured iodine content of 3.1 mg/g, or 13.8 mg of iodine. Saltwater fish and shellfish contain iodine, but one would have to eat 15-25 pounds of fish to get 13 mg of iodine.

[Nutrition Section, Bureau of Public Health. Nutrition in Japan, 1964. Tokyo, Japan: Ministry of Health and Welfare; 1965. ]