As a nutritional expert with a focus on micronutrients, I can provide you with a comprehensive answer regarding the iodine content in eggs and compare it with other food sources. Iodine is an essential trace element that plays a critical role in the production of thyroid hormones, which are crucial for growth, development, and metabolism. Eggs and Iodine Content Eggs are a versatile and nutritious food that contains a variety of nutrients, including protein, vitamins, and minerals. However, when it comes to iodine, the content can vary significantly depending on the diet of the hens that lay the eggs. Free-range or "cage-free" hens that have access to a diet that includes iodine-rich sources such as seaweed or iodine-treated feed will produce eggs with higher iodine content. On the other hand, hens that are confined and fed a diet without these sources will lay eggs with lower iodine levels. Factors Affecting Iodine Content in Eggs 1. Diet of Hens: As mentioned, the diet of the hens is the primary factor. Hens that consume iodine-rich feed will transfer some of that iodine to the eggs they lay. 2. Geographical Location: The soil content in certain regions may be higher in iodine, which can affect the vegetation and, by extension, the diet of free-range hens. 3. Feed Supplementation: Some egg producers may add iodine to the feed to ensure a consistent and adequate level of iodine in the eggs. Comparison with Other Iodine-Rich Foods While eggs can be a source of iodine, especially from hens with a diet rich in iodine, they are not the richest source compared to other foods. Seafood, particularly seaweed and other marine plants, is known to be exceptionally high in iodine. Raw or unpasteurized dairy products can also be good sources, as can certain whole-grain products, which may be grown in iodine-rich soil or be fortified with iodine. Fruits and Vegetables Fruits and vegetables can also contain iodine, but the levels are generally lower than in seafood or dairy products. The iodine content in these plant-based foods can be influenced by the iodine content of the soil in which they are grown. Conclusion In conclusion, while eggs can contribute to your daily iodine intake, especially if they come from hens with access to iodine-rich diets, they are not the highest source of iodine. It's important to have a varied diet that includes a range of iodine-rich foods to ensure adequate intake of this essential nutrient. If you are concerned about your iodine intake, it may be beneficial to consult with a healthcare professional or a registered dietitian. read more >>

Other good iodine-rich foods include seafood, raw/unpasteurized dairy products, certain whole-grain products and cage-free eggs. ... To some extent, fruits and vegetables also contain iodine.May 3, 2015read more >>