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Thyroid Disease And The Connection To Iron Deficiency

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Thyroid-Disease-And-The-Connection-To-Iron-DeficiencyGinni,
Wilson’s Syndrome
Thyroid Nation

 

 

Ginni at Wilson’s Syndrome, discusses iron deficiency and thyroid disease.

 

 

When is the last time you had your iron status checked? Not just serum iron levels, but hemoglobin, total iron-binding capacity (TIBC) and serum ferritin, a measure of iron stores? Knowing your complete iron status is important if you have low body temperature or low thyroid function, especially if you also are often tired, achey, out of breath, have heart palpitations or feel out of breath.  These are symptoms of both thyroid malfunction and iron deficiency, and the two together just make things worse.

Here’s how iron and your thyroid interact: If the thyroid gland runs low on iron,
the chemical reactions that produce thyroid hormone cannot proceed normally.
Iron deficiency impairs thyroid hormone synthesis by reducing activity
ofheme-dependent thyroid peroxidase by 30 to 50% depending on the severity
of the iron deficiency. This iron dependent enzyme uses iodine ions and
hydrogen peroxide to generate iodine, which plays a central role in the
production of thyroid hormones. So you need good levels of both iodine and iron
(and selenium) for your body to be able to produce adequate amounts of thyroid
hormones. In fact, research shows that people with low thyroid function respond
best when they get both iodine and iron. 

 

 

Women are especially likely to develop iron deficiency, because during their
child-bearing years, women require more than twice as much iron as men.
Doctors don’t routinely check iron status in people with low thyroid function,
because it is commonly assumed that if red blood cell quantity and quality
(hemoglobin level) are normal, then iron status is normal. That isn’t always
the case.

Doctors also sometimes treat iron deficiency inadequately. They will prescribe iron supplementation until serum iron levels return to normal, but not long enough for ferritin (storage iron) to be replenished, which takes longer. Treatment may have to continue for some time after serum iron levels have returned to normal to get ferritin stores back to normal. Ferritin levels are also the first to drop when iron intake is low.  So to keep ferritin levels normal it’s important to either get enough iron from foods or from supplements to keep ferritin levels normal. Too much iron isn’t good, either, though, so it’s best to work with your doctor.

**This article originally featured on WilsonsSyndrome.com**

Sources

1.  Zimmermann MB, Köhrle J. The impact of iron and selenium deficiencies on iodine and thyroid metabolism: biochemistry and relevance to public health. Thyroid. 2002 Oct;12(10):867-78.
2.  Triggiani V, Tafaro E, Giagulli VA, et al. Role of iodine, selenium and other micronutrients in thyroid function and disorders. Endocr Metab Immune Disord Drug Targets. 2009 Sep;9(3):277-94. Epub 2009 Sep 1.
3.    Zimmermann MB. The influence of iron status on iodine utilization and thyroid function. Annu Rev Nutr.2006;26:367-89.
4.    Casgrain A, Collings R, Harvey LJ, et al. Effect of iron intake on iron status: a systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr. 2012 Oct;96(4):768-80. Epub 2012 Aug 29.

 Questions or anything to add about iron deficiency and your experience? We want your thoughts in the comments section–Please! 

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