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Goiters are much less common today than 100 years ago primarily due to the widespread use of iodized salt, which has significantly improved iodine intake in populations. Iodine is essential for thyroid hormone production, and its deficiency was a major cause of goiter. Additionally, advancements in nutrition and public health education have further reduced the prevalence of iodine deficiency. These factors combined have led to a marked decline in the incidence of goiters.

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1w ago

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