Excess iodine intake: sources, assessment, and effects on thyroid function
Farebrother J, Zimmermann MB, Andersson M
Published in Annals of the New York Academy of Sciences, Vol. 1446 (1), pp. 44-65
Methodology
Systematic review of population studies and clinical reports linking excess iodine exposure to thyroid dysfunction
Key Findings
Excess iodine intake increases the risk of subclinical hypothyroidism and thyroid autoimmunity, with a U-shaped risk relationship across intake levels.
Conclusions
Both deficiency and excess iodine intake harm thyroid function, so supplementation should be targeted.
Limitations
Observational sources dominate; exposure assessment varies.
Supplements Studied
Excess iodine intake increases the risk of subclinical hypothyroidism and thyroid autoimmunity, with a U-shaped risk relationship across intake levels.
Outcomes Measured
Excess iodine intake increases the risk of subclinical hypothyroidism and thyroid autoimmunity, with a U-shaped risk relationship across intake levels.
Related Health Concerns
Study Details
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.