Iodine
(from Kelp)
Iodine is a trace element essential for thyroid function and is often sourced from kelp (Ascophyllum nodosum or other seaweeds). It is used in fortified foods and supplements.
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How Can Iodine Support Metabolic Health?
Essential for metabolic health, iodine plays a critical role in the synthesis of thyroid hormones T₃ and T₄. These hormones regulate energy expenditure, basal metabolic rate, and macronutrient metabolism by influencing mitochondrial function and ATP production. In addition to its hormonal functions, iodine exhibits antioxidant properties and contributes to immune system balance, supporting the reduction of oxidative stress and enhancing metabolic resilience.¹
Iodine and the Brain
By facilitating the production of thyroid hormones, iodine supports key processes in brain development and function, including neuronal growth, myelination, and neurotransmitter regulation. These processes are fundamental to cognitive performance and emotional wellbeing. Insufficient iodine intake—especially during fetal development and early childhood—has been associated with reduced IQ and impaired cognitive function, highlighting its essential role in maintaining neurocognitive health throughout life.²
Iodine and Immunity
Iodine contributes to immune system regulation by modulating the activity of key immune cells, including the balancing of inflammatory responses and the support of protective T cell function. Additionally, it aids immune cells in producing antimicrobial compounds, thereby enhancing the body’s natural defence mechanisms while maintaining appropriate immune response regulation.³