Thyroid & Heavy Metals Thyroid issues don’t always start in the thyroid. Growing research shows that heavy metals can interfere directly with thyroid signaling, hormone production, and immune regulation . A study published in the Journal of Trace Elements in Medicine and Biology  found that elevated levels of mercury, lead, and cadmium  were associated with a higher risk of thyroid dysfunction. What the research shows: • Mercury  has been linked to autoimmune thyroid conditio

Heavy Metals & Thyroid Dysfunction Heavy Metals and Thyroid Dysfunction: The Overlooked Role of Hormone Transport and Cellular Signaling Most conversations about thyroid health focus on hormone production  — iodine intake, T4, T3, and TSH levels. However, research in endocrine toxicology shows that in states of toxic burden, the deeper issue often lies upstream , at the level of hormone transport and cellular responsiveness , rather than hormone synthesis itself. This helps e