Iodine is an essential trace mineral the body requires for proper growth, development, and metabolic function. As a key nutrient, iodine is primarily known for its role in thyroid hormone production, but its benefits extend far beyond thyroid health. Found naturally in seawater, soil, and certain foods, iodine must be obtained through diet or supplementation, as the body does not produce it.
Iodine deficiency remains a global health concern, particularly in regions where soil iodine levels are low, leading to potential health issues such as thyroid disorders, cognitive impairment, and developmental delays. It is estimated that some 2 billion people worldwide are lacking sufficient Iodine levels. Ensuring adequate iodine intake is crucial for maintaining optimal health at every stage of life.
Daily Iodine Requirements by Age and Gender1
Age Group |
Recommended Daily Intake (mcg) |
Infants (0-6 months) |
110 mcg |
Infants (7-12 months) |
130 mcg |
Children (1-8 years) |
90 mcg |
Children (9-13 years) |
120 mcg |
Teens (14-18 years) |
150 mcg |
Adults (19+ years) |
150 mcg |
Pregnant Women |
220 mcg |
Breastfeeding Women |
290 mcg |
(Source: NIH Office of Dietary Supplements)1
1. Supports Thyroid Health
Iodine is a crucial component in the synthesis of thyroid hormones, thyroxine (T4) and triiodothyronine (T3), which regulate various bodily functions, including metabolism, growth, and development.2 Adequate iodine intake ensures the thyroid gland functions properly, preventing disorders such as hypothyroidism and goiter.2
(Source: NIH)2
2. Enhances Cognitive Function
Iodine deficiency, particularly during critical developmental periods, can lead to cognitive impairments.3 Studies have shown that chronic, moderate to severe iodine deficiency, especially in children, can reduce IQ by approximately 12–13.5 points!3 Ensuring sufficient iodine intake is essential for optimal neurological development and cognitive performance.3
(Source: NIH)3
3. Supports Breast Health
Iodine plays a role in maintaining breast tissue health.4 Research suggests that iodine helps regulate estrogen activity and fibrocystic breast changes, which can cause tenderness and lumpiness.4 Some studies indicate that iodine deficiency may be linked to an increased risk of breast-related discomfort.4
(Source: NIH)4
4. Preserves Skin Health
Iodine contributes to skin health by supporting wound healing, the body’s response to oxidative stress, and helping regulate sebaceous (oil) gland function.5 These factors make Iodine ideal for healthy skin repair and gland regulation. Additionally, iodine deficiency is linked to dry, flaky skin.5
(Source: NIH)5
5. Promotes Fetal and Infant Development
Adequate iodine intake during pregnancy and lactation is crucial for the development of the fetal and infant brain and nervous system.6 Iodine deficiency during these critical periods can lead to developmental delays and cognitive impairments.6 Health authorities recommend that pregnant and breastfeeding women ensure sufficient iodine intake to support their child’s development.6
Iodine as An Essential Nutrient in the First 1000 Days of Life, Source: PMC6
Top Food Sources of Iodine7
Food |
Iodine Content (mcg per serving) |
Seaweed (Kelp) (1g dried) |
16-2,984 mcg |
Cod (3 oz) |
99 mcg |
Yogurt (1 cup) |
75 mcg |
Iodized Salt (1/4 tsp) |
71 mcg |
Shrimp (3 oz) |
35 mcg |
Egg (1 large) |
24 mcg |
Tuna (3 oz) |
17 mcg |
Turkey Breast (3 oz) |
34 mcg |
Cottage Cheese (1/2 cup) |
26 mcg |
Baked Potato with Skin (1 medium) |
60 mcg |
(Source: NIH Office of Dietary Supplements)7
Why Kelp is Ideal
Kelp is nature’s sophisticated way to support healthy hormone function, especially the function of the thyroid and ovarian systems. It is crucial to get kelp from clean sources with reduced pollution risk, and because of contamination from Fukushima radiation Pacific Coast kelp is no longer desirable. Superior sources include the Icelandic area and Atlantic Ocean region. Use such high-quality kelp to support healthy thyroid, breast, and ovarian function while also supporting the health of the immune system and male gonads.
Conclusion
Iodine is indispensable for various bodily functions, from supporting thyroid health to ensuring proper cognitive development. Maintaining adequate iodine intake through diet or supplementation, as appropriate, is essential for overall well-being.
Best Supplements for Iodine
Thyroset: To support a healthy thyroid response use Thyroset.* Powered by wild rosemary and oregano Thyroset contains as key active ingredients the amino acid tyrosine, along with remote source Atlantic Ocean kelp. Take two capsules twice daily.
Nuke Protect: Supports the thyroid with natural potassium iodine.* With premium sourced selenium and an ORAC profile six times more potent than blueberries, it is ideal for those needing optimal antioxidant support. Taken daily, NukeProtect supports immune health, especially during these uncertain times.* For children and adults 150 pounds or more take two to four capsules daily.
Note: This article is for informational purposes only and does not constitute medical advice.
*This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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