Hello everybody. Dr. Bryan Dzvonick here. In the following transcript from the above video, I discuss the most important thyroid nutrient needed for proper thyroid function. Enjoy!

The most important thyroid nutrient is iodine. This is what thyroid hormone is made of. It is the building blocks of Thyroxine or T4 and Triiodothyronine or T3. Without it you wouldn’t have the raw materials to make thyroid hormone. Some people may be mistakenly prescribed thyroid medication when all they really need is a little more iodine.

For anyone diagnosed with a thyroid condition or suffering from low thyroid-like symptoms it would be a good idea have your Naturopathic doctor check your iodine levels.

Lab Test

The best way to check your iodine status is with both a 24-hour urine test and a random blood test. The two tests together give the best picture as the urine test shows how much iodine you’re getting in your diet and the blood test show’s how much iodine you have in your blood.

If your iodine level is too high or too low, you’ll want to adjust your dietary or supplemental iodine intake accordingly.

Dietary Sources

It’s hard to get this nutrient in your diet because there’s not enough of it in the types of foods Americans usually eat. This is why since 1924 it’s been added to salt in the form of potassium iodide and that has been a major dietary source for Americans. In fact, a quarter teaspoon of iodized salt can supply you with up to 47% of your daily requirement.

In recent times, however, many people have opted to salt their food with mineral rich salts such as pink Himalyan salt which is usually not fortified with iodine. If you’re not using iodized salt you’re missing out on a major dietary source of iodine. So, if you have low thyroid symptoms and your lab results show that you have low iodine, you may want to consider switching to iodized salt.

The top food source of iodine is seaweeds such as kelp, nori, kombu, and wakame, though the amounts of their iodine content can vary widely. Here’s a list of other sources of dietary iodine each providing up to 20% of your daily intake:

Dietary Supplements

Here’s the recommended daily allowances of iodine for various ages and circumstances:

Iodine is widely available in dietary supplements and it’s usually in the form of potassium iodide.  I prefer to get my iodine in a multimineral because I already supplement my diet with the other minerals, and it makes life easier for me to get it all in one pill.

For people with normal iodine levels, taking a daily iodine supplement will help you maintain your levels. Just don’t take too much.


Unless prescribed by your doctor, 150 mcg for a healthy adult is adequate to supplement your diet with. If the amount of iodine in your body gets too high it could wreak havoc on your thyroid and you can end up with a goiter, thyroiditis or even worse, thyroid papillary cancer. So, if your thyroid symptoms don’t improve with the recommended daily allowance of iodine then talk with your Naturopathic doctor before increasing your dose.

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Complete Mineral Complex (by Designs for Health):