Iodine
The mineral your thyroid absolutely depends on to make its hormones — without enough iodine, your metabolism and energy levels take a serious hit.
Benefits
- +Essential for thyroid hormone (T3/T4) production
- +Supports healthy metabolism and energy levels
- +Important for brain development (especially during pregnancy)
- +Supports healthy weight regulation via thyroid function
- +May support breast health (some evidence)
- +Important for immune function
Dosage & Cost
The RDA is 150 mcg. Pregnant and breastfeeding women need more (220–290 mcg). If you have a thyroid condition, get levels tested before supplementing — iodine can make some thyroid disorders worse. Potassium iodide is a common supplement form.
Side Effects
- !Too much iodine can actually cause thyroid dysfunction (both hypo and hyper)
- !Stomach upset or nausea
- !Can worsen existing thyroid conditions if not carefully dosed
- !Metallic taste
- !Acne in some people
Food Sources
- • Seaweed (kelp, nori, dulse) — richest source by far
- • Dairy products (milk, yogurt)
- • Fish and shellfish
- • Eggs
- • Iodized salt
References & Links
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This page is for informational purposes only. The information here has not been evaluated by the Food and Drug Administration (FDA). No supplement discussed on this page is intended to diagnose, treat, cure, or prevent any disease. Please consult your doctor or a qualified healthcare professional before taking any dietary supplement.