Evidence supporting the use of: Iodine
For the body system: Thyroid Gland

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Synopsis

Source of validity: Scientific
Rating (out of 5): 5

Iodine is scientifically validated as essential for supporting the thyroid gland. The thyroid uses iodine to synthesize the hormones thyroxine (T4) and triiodothyronine (T3), which are critical for regulating metabolism, growth, and development. Deficiency in iodine can lead to hypothyroidism, goiter (enlarged thyroid gland), and in severe cases, intellectual disabilities in infants and children. The relationship between iodine and thyroid function is well-established, with the earliest public health interventions involving iodization of salt to prevent deficiency-related disorders. Numerous clinical and epidemiological studies demonstrate that adequate iodine intake prevents thyroid dysfunction. The World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC) both recognize iodine as essential for thyroid health and recommend dietary iodine sufficiency. Supplementing iodine is unnecessary for most individuals in regions with iodized salt, but remains crucial in areas where deficiency is prevalent. In summary, there is strong scientific evidence that iodine is fundamentally necessary for thyroid gland function and health.

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