Heavy Metal and Thyroid
Posted October 10, 2016on:
Another good read about our thyroid health: http://www.amymyersmd.com/2015/07/the-toxin-heavy-metal-and-thyroid-connection/
Would like to highlight how mercury affects our thyroid. Two months ago, when my blood test report was out, as expected by my nutritionist, it showed excessive mercury and aluminium in my blood test and we are suspecting they are the culprit of some autoimmune disorder I am experiencing.
Normal whole blood mercury is usually <5 ng/mL and though scientists do not know precisely what level of mercury in blood may be associated with harmful effects, some studies suggest that mercury levels as low as 30 to 40 ng/ml may be associated with visual, nervous, or cardiovascular system effects in adults. Blood mercury levels above 100 ng/mL have been reported to be associated with clear signs of mercury poisoning in some individuals (e.g., poor muscle coordination, tingling and numbness in fingers and toes). As for aluminium, about 10 mcg/L is fairly normal, and above 50 mcg/L is generally now considered a toxic level.
Here is the explanation on how mercury interferes with our thyroid which I like a lot:
“I’m sure you’re well aware that mercury is a toxic chemical that is not healthy for your body, but did you know that it is particularly dangerous for the thyroid? … In fact, your thyroid is exceptionally good at absorbing any available iodine in your body. Unfortunately for your thyroid, mercury and iodine are chemically very similar to each other, so your thyroid is quick to absorb and store mercury too.
This creates a two-fold problem for your thyroid. First, if your thyroid is storing mercury in place of iodine, it won’t have enough iodine to produce adequate levels of T4 and T3 hormones, which can cause you to develop hypothyroidism. Second, it puts you at risk of developing an autoimmune disease. No one knows exactly how heavy metals like mercury lead to autoimmune disease, but research has shown a demonstrated link between the two, including a 2011 study that found that women with high mercury exposure were more than twice as likely to have thyroid antibodies.
One proposed reason for why this happens is that mercury damages the cells of your thyroid gland (as well as other cells in your body) so much that your immune system can no longer recognize these thyroid cells as “self” cells. Another prevailing theory is that your immune system goes on high alert to get rid of the mercury, and this chronic state of inflammation stresses your immune system so much that it starts attacking your whole thyroid.”