Four Minerals Are Essential to Thyroid Health

by Chris D. Meletis, ND

We know that iodine is important for thyroid hormone creation. Yet the following nutrients are often overlooked when it comes to supporting healthy thyroid function. Research shows that low iron levels, as reflected either by anemia or low ferritin levels, can lower thyroid hormone production. Iron deficiency hinders the manufacture of thyroid hormones by reducing activity of the enzyme thyroid peroxidase.

Likewise both zinc and selenium are needed for proper thyroid function. I recommend 200 mcg of selenium per day and zinc of at least 15 to 25 mg per day for most of my patients who need thyroid support and who are low in these nutrients.

In one interesting study, it was discovered that selenium levels correlated with levels of thyroid function and antibody levels as indicated below:

• Serum selenium levels below 80 mcg/L yielded TSH (thyroid stimulating hormone) levels of 2.1 mU/L
• Serum selenium above 80 mcg/L yielded TSH levels of 1.28-1.29 mU/L

• Individuals with (TPO Ab) levels > 600 IU/mL had a mean serum selenium of 83.6 IU/L
• Individuals with TPO Ab levels <600 had mean serum selenium levels between 92.9 and 95.6 mcg/L

The above illustrates the importance of selenium to the thyroid. It should be noted that, in regard to selenium, doses higher than 200 mcg per day are not recommended.

Next month, I will share other key nutrients needed for thyroid health and will discuss how the adrenal glands can impact thyroid health as well.