Thyroid function can be affected by nutritional deficiencies, particularly iodine and selenium, and by environmental exposure to bromine, arsenic, selenium, mercury and cadmium. We are all, to varying degrees depending on our dietary choices, our supplementation routine, or our lifestyle, exposed to the elements iodine, bromine, selenium, arsenic, mercury, and cadmium. These elements are present in the food we eat, the air we breathe, and water we drink, as a result of pollution as well as a natural occurrence, and are generally tasteless, odourless, and impossible to detect without sophisticated instrumentation.
How does exposure to these elements affect health?
Iodine is an essential component of thyroid hormones T3 and T4, so its deficiency has a serious impact on thyroid hormone synthesis. Bromine is in the same chemical family as iodine and excessive amounts will compete with iodine in the thyroid, producing inactive thyroid hormone. Selenium is a component of selenoproteins, including the iodothyronine deiodinases that convert inactive T4 to its active form in the body (T3), and glutathione peroxidase, which prevents free radical damage to the thyroid by destroying the hydrogen peroxide that is a byproduct of thyroid hormone synthesis.
Arsenic and mercury are toxic heavy metals that form tight complexes with selenium and therefore reduce selenium’s bioavailability, resulting in biological effects similar to selenium deficiency including disruption to thyroid health.
While bromine, arsenic, and mercury are known as biological toxins, iodine and selenium can also potentially be toxic if dietary intake, including excessive supplementation, is too high.
This test combines Thyroid Markers and Elements.
Turnaround time: 14 WORKING DAYS