Iodine Deficiency and Radioactive Iodine Cause Cancer and Thyroid Disease

Published on November 27, 2019

Medical ignorance is endemic and nowhere is this more evident than in how contemporary medicine views and treats hyperthyroidism and thyroid cancer. We can extend this statement to how the mainstream views iodine in general and specifically how it ignores iodine deficiencies as a serious cause of cancer.

How doctors think of treating thyroid cancer and hyperthyroidism with radioactive iodine is hard to imagine when radioactive anything is a basic cause of cancer. More dumbfounding is the fact that we have all been exposed to radioactive iodine from the Fukushima accident, so the last thing anyone needs is more radioactive iodine or radiation exposure of any type. (Think CT and PET scans and even MRIs because of the toxic contrast agents often used.)

Because iodine deficiency results in increased iodine trapping
by the thyroid, iodine deficient individuals of all ages are more
susceptible to radiation-induced thyroid cancer sourced in the
environment and sourced with radioactive iodine treatments.

In patients with hyperthyroidism treated with radioactive iodine, organ-absorbed doses were associated with increased risk for death from all solid cancers, including breast cancer, according to a 2019 study published in JAMA Internal Medicine. In the case of female breast cancer – there was a 12% increase in the risk of death from breast cancer; for all solid cancers combined, a 100-mGy dose to the stomach was associated with a 6% increase in death from all solid cancers.[1] Here is more evidence that doctors are a major cause of cancer because they use cancer causing radiation in both their tests and treatments.

Large amounts of fallout disseminated worldwide from the meltdowns in four reactors at the Fukushima-Dai-ichi plant in Japan beginning March 11, 2011 included radioiodine isotopes. Just days after the meltdowns, I-131 concentrations in US precipitation was measured up to 211 times above normal. Highest levels of I-131 and airborne gross beta were documented in the five US States on the Pacific Ocean. The number of congenital hypothyroid cases in these five states from March 17-December 31, 2011 was 16% greater than for the same period in 2010, compared to a 3% decline in 36 other US States (p < 0.03).[2] Many think the threat has passed because of the short half life of I-131 but its sister I-129 has a half life of millions of years.

We should be troubled when we consider that 31.6 times as much iodine-129 than iodine-131was released in the early days of the Fukushima catastrophe[3] and that was felt as far away as New York where Iodine 131gas exceeded 3,400 μBq/m³.[4] Did the government or are medical institutions warn us or tell us to take defensive protective action with iodine supplementation?

This recent research, from Texas Women’s University titled, “A Review of Iodine Status of Women of Reproductive Age in the USA,” states, “Despite the USA being considered iodine sufficient for the general population, the US dietary iodine intakes have decreased drastically since the 1970s, with iodine deficiency reemerging in vulnerable groups such as women of reproductive age.” Radioactive iodine becomes more toxic in the face of iodine deficiencies.

Radioactive iodine is more lethal when administered to iodine deficient individuals for iodine deficient thyroids will desperately use radioactive iodine in place of nutritional iodine. When you consider that Dr. David Brownstein, just outside of Detroit, has tested 7,000 of his patients and found 97 percent of them iodine deficient, we should become aware how oncologists, radiologists and the entire medical industrial complex are abandoning their responsibilities. Brownstsein says:

“Iodine deficiency was still present because our food supply was (and still is) woefully inadequate in iodine. Declining mineral levels in our soil coupled with more pollution in the oceans made a perfect storm for iodine deficiency. However, the iodine deficiency epidemic was increasing because of our increasing exposures to toxic halides fluoride and bromide. These toxic elements competitively inhibit iodine in the body. Our water supply has been contaminated with fluoride and our food supply has been adulterated with bromine in the form of brominated flour and vegetable oils.”

Increased iodine intake is effective strategy
for prevention or reduction of malignancies.

Iodine deficiency is associated with increased risk of some cancers which have thyroid hormone receptors, such as breast, thyroid and stomach (Verheesen et al, 2008). It has known that iodine deficiency is associated with fibrocystic breast disease and breast cancer (James et al, 2008). Treatment of the fibrocystic breasts with iodine causes the fibrocystic turn into normal tissues (Ghent et al. 1993; Kessler 2004; Bezpalov et al., 2005). Actually, iodine induces apoptosis in breast cancer cells at concentrations which are healthy for the body as a whole.

Thyroid hormones stimulate diverse metabolic activities in tissues, leading to an increase in basal metabolic rate. One consequence of this activity is to increase body heat production, which seems to result, at least in part, from increased oxygen consumption and rates of ATP hydrolysis.

Since living organisms use molecular oxygen only for cellular respiration, the rate of oxygen consumption is directly related to the rate of ATP production. Common symptoms of hypothyroidism arising after early childhood include lethargy, fatigue, cold-intolerance, weakness, hair loss and reproductive failure mirroring drops in ATP production and reduced oxygen utilization.

The rate of oxygen consumption of human leucocytes is directly related to thyroid activity. Animal studies (Barker 1955) showed that the rate of oxygen uptake of many tissues is lowered by thyroidectomy and raised by administration of thyroid hormone. Thyroid activity is directly related to iodine sufficiency.

Women with a history of hypothyroidism face a significantly higher risk of developing liver cancer, according to research led by Dr. Manal Hassan of Anderson Cancer Center at the University of Texas. Women who had a prior history of hypothyroidism for more than 10 years had a threefold higher risk of liver cancer compared to women without a history of thyroid disorders.

Nursing practitioner and professor Dr. Kathy O’Connor-Wray writes, “In the developed world, iodine deficiency has increased more than fourfold over the past 40 years. Nearly 74 percent of normal, “healthy” adults may no longer consume enough iodine. An article published in The American Association of Clinical Endocrinologists discusses the decreased intake of iodine by 50 percent since the 1970’s and the reemergence of mild iodine deficiency.” The Centers for Disease Control (CDC) has reported that iodine deficiency is one of the four major deficiency diseases in the world.

Conclusion – Personal Note

The Japanese government has been accused of a cover-up after it refused to allow independent testing of water from the Fukushima power plant that is likely to be released into the Pacific Ocean. Everything about Fukushima has been alarming and the governments (elite) of the world would like to keep the ongoing disaster quiet. But it is part of the iodine story, which was a building calamity itself do to the deepening deficiencies that again the governments and medical institutions continue to hide.

There is a group of iodine doctors, led by Dr. Brownstein, who have tried to inform the public about the necessity of iodine supplementation. Yet recently I was on a pathetic site participating in a pathetic conversation, where even David was called a quack. That’s when I ran for the hills. I am amazed when I run into the mainstream mindset that believes everything the mainstream institutions put out about medicine. For them iodine deficiency seems to suit them so God bless them; but they don’t know that iodine deficiency tends to lower levels of intelligence.

[1] Biol. Tr. Elements Res. 2019. 188:208-20

[2] OJPed> Vol.3 No.1, March 2013

[3] Geochemical Journal, Vol. 46, pp. 327 to 333, 2012


Hi, I'm Dr. Mark Sircus, AC., OMD, DM (P), a doctor and writer of more than 23 books that have sold over 80,000 copies all over the world. I've been promoting Iodine as a safe and effective medicine for more than 10 years and my book "Iodine - Bringing Back the Universal Medicine" has been repeatedly praised by other iodine experts like Dr David Brownstein.

On my website there are hundreds of free articles, but if you need some personalized help, you can make a consultation.

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