What foods are naturally high in iodine?
Iodine is a component of almost every living plant and animal. . In general, foods from the sea contain the most iodine, e.g., seaweed and spirulina, followed by meats, and then green foods. Of all foods seaweed, like kelp, is the most famous and reliable source of natural iodine, however egg and dairy products can also be good sources. Seaweed has such a large proportion of iodine compared to dietary minimum requirements, that it is primarily known as a source of this nutrient. The highest iodine content is found in brown algae, with dry kelp ranging from 1500-8000 ppm (parts per million) and dry rockweed (Fucus) from 500-1000 ppm. In most instances, red and green algae have lower contents, about 100-300 ppm in dried seaweeds, but remain high in comparison to any land plants. Daily adult requirements, currently recommended at 150 µg/day, could be covered by very small quantities of seaweed. Just one gram of dried brown algae provides from 500-8,000 µg of iodine and even the green and
