The Big Iodine Mistake 50% Of People Are Making

Summary

The presenter says that both iodine deficiency and excessive iodine may contribute to hypothyroid symptoms, including fatigue, weight gain, hair loss, thinning of the outer eyebrows, feeling cold, dry skin, and brain fog. He emphasizes aiming for an appropriate amount rather than assuming that more iodine is better.

Key points and strategies

• Consider dietary sources of iodine. Foods discussed include seaweed or kelp, cod, shrimp, oysters, dairy, eggs, and iodized salt. The presenter cautions that sea salt—including Himalayan salt—may provide very little iodine.
• Pay attention to intake if your diet may be low in iodine. He mentions plant-based diets and frequent intermittent or prolonged fasting as situations where iodine intake could be overlooked. He also says pregnancy and breastfeeding increase the importance of adequate intake.
• Understand iodine’s roles. The presenter says iodine is needed to make thyroid hormones and may also affect brain development and estrogen regulation. He describes the thyroid as a major site of iodine storage.
• Consider selenium alongside iodine. He explains that selenium is involved in converting thyroid hormone T4 to T3 and clearing hydrogen peroxide produced during thyroid-hormone production. He gives 100–200 micrograms of selenium as an amount he considers sufficient.
• Avoid excessive iodine, especially with thyroid disease. He warns that high intake may disrupt thyroid function and could worsen or trigger autoimmune thyroid problems, particularly in people with Hashimoto’s. He says selenium does not necessarily prevent this risk.
• Watch for possible signs of excess iodine. The symptoms he lists are a metallic taste and a burning sensation or acne, especially on the chest, face, or back.
• Use the suggested intake figures cautiously. The presenter gives 150 micrograms per day as the adult RDA, says 200–300 micrograms may be appropriate for many adults, and gives 1,100 micrograms as a ceiling he would not exceed. For pregnancy, he cites 220 micrograms, and for breastfeeding, 290 micrograms. He recommends working with a qualified practitioner to determine individual needs.
• If choosing kelp, check the label and source. He recommends kelp from a clean ocean region and cautions that the amount listed on a label may not equal the amount absorbed.

These are the presenter’s claims and recommendations, not individualized medical advice. Iodine and selenium supplements can affect thyroid health, so discuss them with a qualified healthcare professional—particularly during pregnancy or if you have thyroid disease.

Presenter/source: Dr. Eric Berg, DC. No external research sources are named in the subtitles.