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Basic Causes of Thyroid Dysfunction

© Deanna Couras Goodson

I am sure you are aware that the thyroid is a little gland with a big job. It performs a specialized and important function in the body's metabolism.

It is indeed a delicate balance that keeps the thyroid functioning properly. Since hypothyroidism is a disease, or dysfunction, of the thyroid, I think it's appropriate that we begin to understand some reasons why good thyroids can go bad, or, better phrased, a functioning thyroid becomes dysfunctional.

There is really no clear-cut, textbook answer to this question because conditions, like people, are complex and are the result of many factors. Also, what can or does go awry for one person may not be what causes the same condition, in this case hypothyroidism, in another person. There's more than one way to throw a thyroid 'out of whack'.

Clinically speaking, there are three situations that occur in the thyroid gland itself which cause a thyroid malfunction. These include:

too little production of thyroid hormones. Therefore, hypothyroidism is a condition and a thyroid dysfunction.

too much thyroid hormone is produced. That, of course, is hyperthyroidism.

extra flesh collects around the thyroid gland forming a nodule. This nodule may or may not be cancerous.

Those are pretty basic and they just don't feel complete. They just beg the question, so what causes these dysfunctions to occur?

Of course, the answer to that question isn't easy either. (Nothing ever is, is it?)

First, is poor nutrition. Some studies have shown that people who develop thyroid problems, most notably hypothyroidism, suffer from iodine deficiencies. Since iodine is a trace mineral found in food that combines with tyrosine to make both T3 and T4, both of the hormones produced in the thyroid, a lack of it, can lead to under-production of thyroid hormones.

There is information out there that says that certain foods can interfere with the production of thyroid hormones. These include: soy, millet, or cassava. If a person eats too many of these, he or she can throw their thyroid off. Other studies find that deficiencies in Vitamin A, Magnesium and Iron also can cause the thyroid to malfunction.

The second factor is stress. When a person is under stress, certain hormones are released in the body, such as cortisol. Chronic stress can cause hormone disturbances and hormonal deficiencies which affect the endocrine system, and the thyroid. Of course, low thyroid function can mimic stress and other mental illnesses, most notably depression, so it's hard to know which comes first. Despite that fact, the situation is a virtual catch-22 once you get into it.

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