Exploring iodine deficiency, thyroid health, and the whole-body iodine conversation
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What If Your Body Is Missing Something It Needs?
When we talk about root-cause wellness, we often focus on what may be burdening the body: stress, toxins, poor sleep, inflammation, or an unhealthy diet.
But there is another important question:
What might my body be missing?
Our bodies need vitamins, minerals, protein, healthy fats, and other nutrients every day. These are some of the basic materials the body uses to make hormones, build and repair tissue, produce energy, and keep its many systems working.
That is the focus of our new Nutrient Revival Series. We are beginning with a mineral that is needed for our cells and has a very important job: iodine.
What Is Iodine?
Iodine is an essential mineral. That means your body needs it but cannot make it on its own. We have to get iodine from food, iodized salt, or even supplements.
Iodine's best-known job is helping the thyroid make thyroid hormones. These hormones help control metabolism, which is how the body uses food for energy. Thyroid hormones are also important for normal growth and brain development, especially during pregnancy and early childhood.
Iodine may be tiny, but its job is not.
Why Does the Thyroid Need Iodine?
The thyroid is a small, butterfly-shaped gland in the front of the neck. It takes iodine from the bloodstream and uses it to make the hormones T4 and T3.
When the body does not get enough iodine for a long time, the thyroid may enlarge as it tries to capture more iodine. This is called a goiter. Severe deficiency can also lead to low thyroid hormone levels.
But it is important to remember that not every thyroid problem is caused by low iodine. Thyroid conditions can have many causes, so symptoms should be evaluated rather than automatically treated with iodine.
Are We Getting Enough?
Most people in the United States get enough iodine, but some people may not.
People who eat little or no seafood, dairy, eggs, or iodized salt may have a harder time getting enough. Some people following vegan diets can also be at greater risk. Pregnancy and breastfeeding increase iodine needs because iodine supports the baby's developing brain and nervous system.
This is one reason I encourage people to look at nourishment as part of the root-cause conversation. Sometimes we are so focused on what to remove that we forget to ask whether the body is receiving what it needs.
What about symptoms?
Low thyroid function can be associated with symptoms such as tiredness, feeling cold, constipation, dry skin, trouble concentrating, and changes in weight. But these symptoms can have many causes. They do not necessarily prove that someone is iodine deficient.
So, if you are concerned about your thyroid or iodine intake, testing and guidance from a qualified health professional can help you understand the bigger picture.
Where Do We Get Iodine?
Food is a great place to begin. Common sources of iodine include:
Food | Iodine Note |
Seaweed | One of the richest natural sources, but the amount can vary greatly. |
Fish & seafood | Cod, tuna, shrimp, and other seafood can provide iodine. |
Dairy | Milk, yogurt, and cheese are common sources in the U.S. diet. |
Eggs | Eggs, especially the yolk, provide some iodine. |
Iodized salt | A simple source when the package specifically says “iodized.” |
A surprising salt lesson
Sea salt, Himalayan salt, kosher salt, and other specialty salts are not automatically good sources of iodine. Many are not iodized at all.
If you use salt and are counting on it for iodine, read the label.
Seaweed also deserves some caution. It can contain a lot of iodine, and the amount varies from one type to another. More seaweed does not necessarily mean better iodine nutrition.
Does Iodine Matter Beyond the Thyroid?
The thyroid stores most of the body's iodine, but researchers have also found iodine in other tissues. This has led some researchers and integrative physicians to ask whether iodine may have roles beyond thyroid hormone production.
This is an interesting area, but we do not need to answer every question in Week 1.
In our next blog, we will explore what is known about iodine outside the thyroid and look at some of the broader ideas surrounding whole-body iodine.
Dr. David Brownstein is one of the physicians who has written extensively about this broader view of iodine. We will use some of his work as part of that discussion while also looking at established nutrition and thyroid research.
Iodine Is Part of a Bigger Nutrient Picture
One mineral rarely works alone. The thyroid and the rest of the body also depend on nutrients such as selenium, iron, zinc, protein, and vitamins.
The body works as a team, and nutrients do too.
This is one of the most important ideas behind the Nutrient Revival Series. We are not looking for a single 'miracle' nutrient. We are learning how to nourish the body with the building blocks it needs.
Should I Take an Iodine Supplement?
Iodine is an essential mineral our bodies cannot make on their own, so we must obtain it through our diet. Yet modern eating patterns and changes in our food system have raised important questions about whether everyone is consistently getting enough of this vital nutrient.
Iodine is naturally present in some foods, particularly foods from the sea, while the amount found in plant foods can vary depending on the iodine content of the soil in which they are grown.
Because iodine is needed to make thyroid hormones, getting enough matters. For some people, this may mean intentionally choosing iodine-rich foods and considering supplementation when dietary intake is not enough.
Rather than thinking of supplementation as something everyone should avoid, I believe it can be another tool for supporting adequate nutrition. Clean, nutrient-rich foods should remain part of the foundation, while supplements can help fill nutritional gaps when appropriate.
Our bodies need iodine. The question is not whether iodine is necessary, but whether we are getting enough.
Now, higher-dose iodine is a different conversation. If you are considering therapeutic or higher-dose iodine, especially if you have a thyroid condition, take thyroid medication, or are pregnant or breastfeeding, working with a knowledgeable health professional is important.
Root Cause Takeaway
Sometimes supporting the body is not only about what we need to remove. It is also about what we need to restore.
Iodine is a perfect example. It plays an essential role in making thyroid hormones and supporting normal growth and development.
At the same time, iodine reminds us that balance matters. Too little can be a problem, and too much can be a problem.
Nourishment matters.
Minerals matter.
Balance matters.
Minerals matter.
Balance matters.
The goal is not simply more. The goal is enough.
Our bodies are wonderfully complex. Caring for them means learning what they need, nourishing them wisely, and approaching health with gratitude and discernment.
Coming Next
Week 2: Beyond the Thyroid: The Whole-Body Iodine Connection
We will look at where iodine is found outside the thyroid and explore the larger conversation around iodine, breast and reproductive tissues, and whole-body health.
Resource Recommendation:
Educational Note
This article is for educational purposes and is not medical advice. If you have thyroid disease, are pregnant or breastfeeding, take thyroid medication, or are considering higher-dose iodine supplements, talk with an appropriate licensed health professional.
Restore. Rebuild. Renew. • Educational content only
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