What type of fish is known to provide a natural source of iodine?

Saltwater fish are widely recognized as a natural source of iodine. This is due to the fact that iodine is found in higher concentrations in seawater compared to freshwater. Fish that inhabit the ocean absorb this mineral through their gills and skin, as well as from their food sources, making them rich in iodine.

The iodine content is particularly significant in various species of saltwater fish, which is essential for the production of thyroid hormones in the human body, supporting metabolism and overall health.

While some freshwater and farm-raised fish may contain trace amounts of iodine, they generally lack the higher concentrations found in saltwater species. Canned fish can vary in iodine content depending on the type of fish and whether it retains most of its natural nutrients during processing, but inherently, it is saltwater fish that are primarily recognized for this mineral.