Iodine is a small but essential mineral that plays a major role in thyroid function, metabolism, immune defense, and overall hormone balance, yet many people don’t get enough since the body can’t produce it on its own. Low iodine levels can lead to fatigue, weight gain, brain fog, and thyroid issues, especially in higher-risk groups like pregnant women or those avoiding iodized salt. Found in foods like seaweed, fish, eggs, and dairy, iodine is also important in preparedness planning due to its role in blocking radioactive iodine exposure. Like most nutrients, balance is key—too little or too much can both cause problems.
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