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The Iodine Group | |
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IODINE AND the Environment
Iodine is a mineral that comes from our soils, oceans, and atmosphere.
Iodine is unequally distributed across our planet. Sometimes, the soils and waters are rich in iodine, sometimes they are deficient. Areas near the oceans tend to have more iodine than inland and mountainous areas. Glaciers and heavy rainfall can deplete iodine from soils.
The nutritional and mineral profile of plants ultimately depends on the mineral content of the soil, water, and atmosphere. Seaweeds grow in iodine-rich coastal waters and can accumulate iodine. Kelp tends to accumulate the most. Land plants tend to have much less iodine. Fuge makes a convincing argument that iodine in land plants is dependent primarily on iodine in the atmosphere, rather than in the soils.
The iodine in animal products largely depends on the iodine available in their food and water. Coastal fish tend to have significant iodine because they live in an environment with available iodine. Meat, dairy, and eggs have more iodine when iodine is included in the feed and water.
Iodine Maps show where iodine is found in waters and soils. Maps also show measures of iodine nutrition, which tend to parallel iodine available in food, soils, and water.
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