
Dr. David Brownstein has written an entire book about iodine.ย Itโs called Iodine: Why You Need It and Why You Canโt Live without It. He estimates that about a third of the worldโs population โ 1.5 billion people โ live in an area of iodine deficiency as defined by the World Health Organization.
Iodine is a super important mineral in your body. It has a number of major functions. Most notable is that it is part of the thyroid hormone. Your thyroid is a butterfly-shaped gland that lives in your neck. Itโs responsible for the metabolic rate of the entire body; every cell in your body is controlled metabolically by the thyroid gland.
We call the thyroid hormones T-3 and T-4 for short. T-3 has three iodine molecules, and T-4 has four. If you are deficient in iodine, you cannot make sufficient thyroid hormone.
Iodine has been the subject of a great controversy. There are people who say, โNo, donโt take extra iodine,โ and others who say, โYes, you must take extra iodine.โ Thereโs a lot of controversy.
I attended a lecture at a conference by Dr. Jay Mead, an MD. He termed it โiodophobiaโ โ fear of iodine. Thereโs a lot of that going around because of some pretty poorly done studies that he says were not scientific at all.
In this post, I will go through some of the functions of iodine, some of the foods itโs found in, and some of the diseases that itโs been known to help to reverse or bring into control.
And, of course, you need to make a decision for yourself as to whether supplementing with iodine or eating iodine-rich foods is in your best interest.ย I would venture to say that it is, and there are a few circumstances when it may not be. Weโll also talk about the tests that you can do to determine if you are sufficient in iodine and what you can do if you arenโt.
Iโve been on a thyroid hormone kick because I just recently completed teaching the thyroid module toย my year-long Energy Recharge coaching program members and my health practitioner-level certification program for those who want to incorporate alternative methods โ nutrition, diet, lifestyle โ into their practices and help people really get a deep healing.
Iodine has a number of therapeutic actions in addition to being an integral part of thyroid hormone.
- One is antibacterial. You may have experience with this, in terms of topical, antiseptic-type applications where you can paint iodine over an area in order to help the body to fight off whatever bacteria on the skin may want to get into that open wound.
- Iodine treatment has also been used in water, like if youโre out going camping. Before the advent of really cool filters that are portable that you can take along with you, there was the use of iodine in the drinking water. So youโd go camping. Youโd gather water from the stream, youโd put one of these iodine tablets in there. It would dissolve. It really did not do anything good for the taste of the water, but you knew you were protected from whatever bacteria critters were growing in that stream so that you didnโt take them into your body. So itโs definitely an antibacterial.
- Itโs also considered to have anti-cancer properties. In particular, people with breast cancer have found really good results โ and thereโs a site done by David Brownstein and Guy Abraham. Theyโve done a lot of research on this, so if you just Google โiodine and breast cancer,โ youโll come to lots of really good resources for that.
- Women with fibrocystic breasts can actually paint the iodine on their breasts and it noticeably helps those fibrocystic breasts go down within a week. Women who have fibroids, uterine fibroids, can paint the iodine vaginally so that it gets up there. You can go in and paint it on the cervix so that it goes up into the uterus and also it can get to the ovaries that way as well, and helps with fibroids.
- The other thing that iodine is good for is an anti-parasitic and anti-viral. So it is not just antibacterial, but anti-parasitic and anti-viral. They put it in the water on camping trips because of its anti-parasitic properties.
- It also helps to break down mucus. Itโs whatโs called a mucolytic agent โ helps to break down or thin the mucus for excretion, and it can also help to balance your pH.
Iodine has a number of important functions in the body.
Thyroid and salivary glands. There are a number of organs in the body that tend to concentrate iodine in addition to the thyroid gland, which is at the top of the list of organs that concentrate iodine: thyroid glands, salivary glands – those glands in your mouth that produce saliva to help you break down your food and moisten your food for digestion, and breast tissue โ huge. Right? We just talked about how itโs used in cases of fibrocystic breasts or breast cancer.
Stomach lining. Thereโs also a concentration of iodine in your gastric mucosa. What does that mean? It is the lining of your stomach. The lining of your stomach is replete with iodine. So if you donโt have enough iodine, you canโt make a good gastric mucosa. You may be more subject to problems like gastritis and ulcers.
Sweat glands concentrate iodine as well. So if youโre not taking in enough iodine, youโre not going to be moistening in your sweat glands โ you may not be sweating as much, which means that youโre holding toxins in your body rather than sweating them out.
The liver, the heart, and the ovaries. The ovaries actually concentrate iodine. So if youโre deficient โ your ovaries donโt have enough โ you can end up with cysts on your ovaries. You can be more subject to ovarian cancer.
Iodine deficiency is a real threat to your health

When we compare the RDA to the amount that Japanese people get, for example, – where they eat a lot of sea vegetables โ theyโre getting something like 13 milligrams of iodine every day. We donโt see iodine deficiencies and goiter in those regions.
On the other hand, people here in the States, where thereโs very little iodine in the soil, are getting in the micrograms of iodine daily. Thatโs not sufficient to have excellent health, and to have excellent thyroid function.
So the deficiency is amazingly huge. And, the sad part about it is, 90 percent of what you take in gets excreted in your urine. 90 percent! If you happen to be deficient, then that percentage goes down. You are going to be holding on to more. If you take a large dose of iodine and then measure your urine, youโre going to see that youโre actually holding on to more of the iodine. So that excretion amount goes way down. Thatโs actually the premise for a test called the iodine loading test.
The iodine loading test will have you take a baseline level of iodine in your urine. And then you take what they call a loading dose of iodine, which would be somewhere about 50 milligrams โ itโs a large dose. And you take that and you collect all your urine over the next 24 hours, and you see how much iodine is actually going out. If youโre excreting in the neighborhood of 90 percent, then youโre taking the right amount of iodine.
If youโre not excreting that much, that means that you may be deficient and supplementation with iodine would be a good thing. Iodine loading test is definitely a good test for iodine, and itโs recommended by most of the major researchers in the iodine industry, such as Guy Abraham, an MD, David Brownstein, an MD, and a number of others.
Let me give you a few startling statistics about iodine.

It affects children. Now, this is an interesting fact. Iodine deficiency, according to Dr. Mead and Dr. Brownstein, is the most common cause of preventable mental retardation and brain damage. Thatโs huge! If weโve got a deficiency of a nutrient thatโs correctable, why arenโt we doing something about it?
Iodine is deficient in our soils. You have to go out of your way to get enough iodine. I think it was back in the 1900s that they first started iodizing the salt because they realized that people were not getting enough iodine in their bodies. So they start putting it into salt because people eat a lot of salt.
So when the soils get that depleted of a particular mineral, one of the ways that the food supply can become replete โ meaning the iodine levels become increased and replaced โ is by growing foods in sea water. And thereโs a growing population of people who are doing hydroponics, where theyโre growing their foods in sea vegetable waterโฆsea water, basically, which is loaded with iodine. The sea is loaded with iodine.
The edible iodine champion: sea vegetables

Because if you think about that slimy stuff that comes out of the sea, how would you package that? How would you send that? How would you purchase that? It would tend to go bad in transportation, so they dehydrate them, usually by laying them out on the beach and allowing the sun to dehydrate them, and then package them. Then you can buy them packaged and dry, some of which you can eat dry; they make a nice, crunchy snack. Others of which you would need rehydrate. So you soak them in water and then you can use them in your salads. Thereโs a number of amazing dishes that you can make with sea vegetables and help you get your iodine stores.
Itโs estimated that you need between an ounce and two ounces of the sea vegetables in order to maintain a good, healthy iodine level. And thatโs not that hard to get. We recently did a class for a group I have called the Vital Health Community. Every month we do an online video class where people come together online and watch me or a guest chef that Iโve picked out live-stream in my kitchen, and weโre actually making food. We did a class on sea vegetables. We learned to make very delicious, very beautiful dishes that are loaded with nutrients – nutrients like iodine and others that are hard to get.
Let's dig in a little bit more about iodine and the โiodiphobia.โ
Why are people so scared? Well, it turns out that a lot of people think that theyโre allergic to iodine. They put on an iodine-containing solution, and they get a problem. They get a skin rash, or they break out in hives or something along that line.
Itโs actually, oftentimes, not the iodine itself in the preparation, but something else. If you have a reaction on your skin to iodine, then itโs worth looking at what else is in that product and making sure that you really are allergic to iodine before you shun sea vegetables from your diet and donโt take iodine.
Most people are not allergic to iodine itself. A lot of the reactions are to the radioactive iodine that is used to annihilate the thyroid gland. When the thyroid gland gets hyperactive โ meaning itโs overreacting โ you get jittery and agitated and your heart races, and itโs not good for you. So medicine, in its infinite wisdom and ability to โletโs just treat the symptom, not the cause,โ sees that as the big problem. They donโt know how to turn down the thyroid function โ although, in reality, there are some natural substances you can use in high quantities โ but they donโt know how to turn it down; they want to get rid of it. And so they inject people with radioactive iodine to basically destroy the thyroid gland.
A lot of people have allergies to those preparations, and I tend to agree with Dr. Mead in that I donโt think those are allergic reactions so much as just reactions to other things like the radioactivity. So thatโs just an aside of the kind of bizarre way that we go about treating things rather than looking at the underlying cause. Like why is the thyroid overproducing? What kind of things can we do to help the thyroid to bring normal function back?
According to Dr. Mead in a paper called โObservations in Iodine Sensitivityโ in the Annals of Allergy, March 1957, iodine allergies to routine doses are essentially a myth. They did a study; they tested people who are supposedly allergic to iodine; and they did some studies to expose them to real, true iodine โ iodine alone โ and there were no anaphylactic reactions. So thatโs why people think theyโre allergic to iodine, but really itโs probably something else.
How much iodine is optimal?

According to Dr. Brownstein, 150 micrograms is enough to barely sustain function. Itโs not enough to become ideally healthy. He has case after case in his book of people who have come in with โseeminglyโ unrecognizable problems. ย Theyโve had symptoms that resemble low thyroid, but their doctors have tested them and found out that, theyโre not really low thyroid โ maybe theyโre just slightly there on the borderline. Theyโre on the lower end of normal. Dr. Brownstein comes to find out, upon doing an iodine loading test, that theyโre severely deficient in iodine. He supplements them with the anywhere from 25 to 50 milligrams of iodine a day, and they recover. They make these miraculous recoveries.
Just because the RDA is set at a certain amount for a nutrient doesnโt mean that thatโs the amount that you take for optimal health. I donโt know about you, but I donโt want marginal health. I donโt want marginal energy. I want exceptional energy. And the RDAโs are not necessarily going to get you to optimal health for lots of different nutrients. Okay? We know that for vitamin C for sure. Miracles happen when people go way beyond the RDAs for vitamin C. I think the vitamin C RDA is still at 60. They may have raised it to 100 milligrams.
We have people taking in the neighborhood of grams, multiple grams a day. We have people test themselves. I have a process I take them through for vitamin C, where they test themselves to see how much vitamin C they need. And when they take what they need, miracles happen โ like longstanding allergy symptoms go away, autoimmune diseases go into remission. Their immune system steps up and the recurrent infections that they used to get no longer plague them.
So we know that for vitamin C; itโs also true for iodine.
But whatโs the fear coming from? So, other than an allergy, weโre looking at issues related to goiter. Thereโs a lot of fear of โif you take too much iodine, you can get a goiter.โ And indeed you can. Again a goiter is a growth in your neck. The thyroid gland is hypertrophied โ itโs enlarged โ and itโs unpleasant, because you feel a hoarseness in your throat; you feel constant pain there. It can clog and make it very difficult to swallow โ and very painful to swallow, and itโs just not a good thing to be happening. That can happen from too much iodine. It more likely is going to happen from too little iodine.
Where to get and how to take the iodine loading test
- The iodine loading test is easily available โ Google โiodine loading test.โ There are a number of labs that do it. Doctorโs Data does it, Labrix does it, Hakala Research Labs do it.
- If youโre going to do the iodine loading test, get a measurement before you take the iodine loading dose.
- First thing in the morning, collect your urine, and then you pour some of it in a little vial.
- Next take a 50 milligram dose of iodine, andย collect all the rest of your urine that day.
- At the end of the day you pour some of the mixture into another little vial and you send it off to the lab along with the first vial. Theyโre looking to see โwhatโs the difference between the amount of iodine you excrete when you havenโt taken a lot of iodine versus when you do?
You want to see if thereโs a difference when you do a loading dose and what your body is handling. So thatโs one way to do it. Some labs only do the post-loading, and I like to see the pre and post because it gives us a lot more information.
The other lesser known iodine-related test: halide levels
The other thing that some of the labs do is whatโs called the halides. So let me give you a little background of what halides are and how important they are in your life. If you go to the periodic table of the elements โ which many of you are going โOh, no, that was chemistry. I didnโt like chemistry. I havenโt done that since ninth or tenth gradeโ On right hand side of the chemistry chart, youโve got helium and sodium and argon and all those kind of things going down. Next to that is a column for the halides. The fourth one down is iodine but some of the other halides in that column are fluorine, chlorine, bromine and astatine.
The environment thatโs loaded with halides other than iodine, and they compete with iodine for binding sites in the body. They look similar enough to iodine that they can bind to the receptor sites. They can bind to make an analog of thyroid hormone, but itโs not real. That will trick the body into thinking that youโve got enough iodine, but itโs actually bromine or chlorine or fluorine thatโs there, and it inhibits the function of iodine and causes iodine deficiency symptoms – even if you donโt have an iodine deficiency!
The other thing that competes with iodine is radioactive iodine. So if youโre having scans done where you're being injected with radioactive iodine, or youโve had radiation to your thyroid due to hyperthyroidism, you have radioactive iodine competing against iodine or binding sites.
If thereโs a nuclear plant accident, like we had in Japan not too long ago , and itโs releasing radioactive iodine into the environment, and you're taking that in โ by breathing, ingestion, or your skin, you are being exposed to radioactive iodine, which can then interfere with your own thyroid function.
So choose an iodine loading test that will also check for halides so you get a clear picture not only of how much iodine you have but how much competition is present.
Take charge by limiting your exposure to halides to improve the functional effectiveness of your iodine status.
Municipal water– And some of the places that youโre getting exposed – number one, if you drink or bathe in municipal water has been treated with chlorine to disinfect it.
Ah, what did we learn about iodine? Itโs also a disinfectant. All the halides are disinfectants. Some of them have negative effects on our body; one of them has positive effects.
Tap water. if youโre drinking, bathing or taking showers in tap water, youโre exposing yourself to a lot of chlorine.

Then it goes through a triple filtration and reverse osmosis process before Iโll drink it. So, by the time the water gets to me, Iโm drinking really pure water. If you donโt have this kind of system set up, you can do a number of things. You can get a shower filter to filter out the chlorine. You can also get either a reverse osmosis or some other purification unit for your drinking water โ really important stuff.
Hot tubs. Bromine is found, in some cases, in hot tubs. Itโs usually not used whole scale in swimming pools for a disinfectant, but itโs often used in hot tubs. Itโs also found in bread. Itโs called dough conditioner โ helps the bread to be more elastic and utilize the gluten. Well, I donโt recommend eating gluten anyway, but definitely staying away from breads that have bromine in them as a dough conditioner.

My goal here was to just touch on the important points about iodine. So that you now know how important it is, not just for your thyroid function, but for breast health, for your female reproductive organ health, and for the entire health of your immune system.
I encourage you to check out my free SHINE program at https://drritamarie.com/SHINEINELivestreamย to learn more about these organs and the effects of iodine and other nutrients in those organ systems. And follow me on Facebook, Twitter, and YouTube.
Here's to your vibrant health!









You have to be careful with iodine it can cause horrible detox symptoms as it starts to detox bromine and chlorine from your system. I did not understand why i felt so horrible after taking it until i did more research. I tried smallest dose of Lugols iodine and ended up pre hypothyroid. I try to get from food sources only. It was my understanding that a goiter is caused from inflammation not a lack of iodine because of all the iodine that is in salt and other foods.
Pre hyperthyroid i meant. Radishes are also good for thyroid balance if you research. I’ve also read good things about flax and Chia, Chia contains iodine and other minerals good for thyroid function.
Hi,Dr. Rita-Marie,
Next week i have to have an MRI with contrast dye injected into me.for finding some very painful sutures left years now and got to the stage of being intolerable.
What can I take after they`ve done that to bring my body back into balance? Many regards
I also have some homeopathics
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