Iodine Deficiency Epidemic: An Expert’s Perspective with Dr. David Brownstein

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Iodine is an essential trace mineral that enables proper thyroid function and overall wellbeing. But some integrative health experts argue we are suffering from an invisible iodine deficiency epidemic. To illuminate this controversial topic, I recently examined an enlightening interview with holistic physician Dr. David Brownstein.

Introducing Dr. Brownstein

Dr. Brownstein is an experienced practitioner of integrative medicine, having treated patients with natural therapies for over 20 years. After finishing conventional medical training, he grew disheartened by the focus on prescription drugs for suppressing symptoms.

A personal health struggle led him to explore complementary therapies that address the underlying causes of disease. Since then, he has published over a dozen books and numerous studies on topics like iodine, thyroid disorders, hormones, and holistic healing.

Iodine Use Through the Ages

As Dr. Brownstein explained, iodine was first discovered as an element in 1811 by Bernard Courtois. In the 19th century, it emerged as a widely used medicine to heal infections. Then in the 1920s, iodized salt practically wiped out hypothyroidism and goiter caused by severe iodine deficiency. At that point, with defect disorders eradicated, medical fascination with the once-acclaimed mineral faded as doctors assumed iodized salt provided sufficient daily intake.

Bernard Courtois discovering iodine in 1811

Declining Iodine Levels: A Hidden Health Crisis

While iodized salt was once heralded as the solution to iodine deficiency, Dr. Brownstein presents a contrasting perspective. He argues that iodine levels have plunged by 50% or more over the past 50 years, coinciding with concerning health trends. This decline parallels increasing rates of thyroid disorders, fibrocystic breast disease, endocrine dysfunction, and cancers affecting various organs. Let’s delve deeper into these trends and their implications in the subsequent sections.

Decline of Iodine Levels Over Time

The next graph depicts the median urine iodine levels in micrograms per liter of the US population from 1971 to 2014, sourced from the National Center for Health Statistics (NHANES). Notably, data is absent for the years 1974-1987. This graph provides a visual representation of the significant drop in iodine levels over the specified period.

NHANES Data for the Median Urinary Iodine Status from 1971-2014

The interviewee presents a contrasting view, arguing that the decline in iodine levels is not indicative of sufficiency but rather highlights a pervasive issue exacerbated by modern environmental factors. Increased exposure to toxic substances like bromide and fluoride, which compete with iodine for receptor sites in the body, may further hinder iodine’s function. In light of these challenges, Dr. Brownstein advocates for higher doses of iodine supplementation to counteract the effects of deficiency in today’s toxic world.

In contrast to the notion that microgram doses are adequate, Dr. Brownstein emphasizes the necessity of milligram-level supplementation to effectively counteract the effects of iodine deficiency, drawing from his clinical experience and research findings. Despite his clinical experience indicating widespread deficiency, population data from the the Centers for Disease Control and Prevention (CDC) suggests stable iodine levels, albeit subpar, over the past few decades. While mild deficiency persists in some groups, officials maintain that overall intake is adequate.

Iodine Deficiency in Pregnant Women: A Public Health Concern

Now, let’s examine iodine levels among specific populations, particularly focusing on women of childbearing age and pregnant women.

The following figure offers insight into iodine levels among women of childbearing age, a demographic vulnerable to iodine insufficiency due to increased physiological demands. From 2005 to 2008, data reveals concerning inadequacies, with 38.3% of non-pregnant women exhibiting urine iodine concentrations below the World Health Organization’s (WHO) recommended sufficiency level of 100 μg/L. Similarly, 56.9% of pregnant women had concentrations below the WHO’s suggested level of 150 μg/L. Notably, the WHO recommends urine iodide concentrations between 150-249 μg/L for pregnant women, yet the graph illustrates that around 60% remain below the optimal threshold, underscoring significant public health concerns for maternal and fetal well-being.

Iodine Deficiency and Women of Childbearing Age: NHANES 2005-2008

Unfortunately, more recent data was not available for analysis. However, the insights gleaned from the data spanning 2005 to 2008 still provide valuable reference points for understanding current trends in iodine sufficiency among women of childbearing age.

The interviewee spotlights research demonstrating that many groups, especially pregnant women, have inadequate iodine levels. Studies link maternal iodine deficiency to ADHD, lower IQ, and other neurocognitive conditions in children.

Urinary Iodine Levels Across Age Groups

Lastly, let’s explore urinary iodine levels across different age groups, as observed in NHANES 2009–2010 studies. The next figure depicts key insights from the data, revealing varying iodine levels in μg/L across age groups. Of particular concern is the U-shaped curve, with the lowest median urinary iodine levels observed in women of childbearing age. This group consistently exhibits lower levels compared to the general population, raising alarms regarding fetal brain development and overall health outcomes.

Median Urinary Iodine (UI, ug/L) by Age Category, NHANES 2009-2010

The Health Benefits of Iodine: A Comprehensive Guide

Iodine: Crucial for Thyroid Health and Beyond

Iodine plays a crucial role in synthesizing thyroid hormones, essential for regulating metabolism, supporting growth, and ensuring proper development. Dr. Brownstein emphasizes its significance beyond thyroid function, as iodine is also vital for the integrity and function of various tissues, including the breasts, uterus, ovaries, and prostate.

Insufficient iodine levels may lead to thyroid disorders and impact other areas, potentially increasing the risk of conditions like cyst formation or cancer over time. Dr. Brownstein highlights a range of health issues associated with iodine deficiency, including hypothyroidism, goiter, thyroid nodules, impaired cognition, ADHD, fibrocystic breast disease, ovarian cysts, infertility, and escalating cancer risk.

Highlighted thyroid, as essential on the uptake of iodine

Iodine: A Powerful Detoxifier and Cancer Preventer

In addition to its role in thyroid health, iodine acts as a powerful detoxifier, displacing toxic compounds like bromide and fluoride from tissue receptor sites and mobilizing heavy metals such as mercury from the body. This cleansing effect is complemented by iodine’s protective role against conditions like fibrocystic breast disease, attributed to its anti-inflammatory and antioxidant properties.

Moreover, iodine regulates estrogen metabolism, crucial for maintaining breast health. Dr. Brownstein’s research underscores iodine’s potential in managing thyroid disorders, leading to improved thyroid function and reductions in thyroid nodule size. He notes from his experience that iodine supplementation often leads to favorable responses in addressing these conditions.

The Iodine Loading Test: A Revolutionary Approach to Assessing Iodine Deficiency

In the realm of iodine assessment, Dr. Guy Abraham stands as a pioneer, notably for his development of the 24-hour iodine loading test in the 1990s. Collaborating with Dr. David Brownstein, they conducted groundbreaking research at Abraham’s lab in California, shedding light on iodine deficiency and its far-reaching implications.

The Importance of Testing

When evaluating iodine status, especially in children, urinary testing serves as a critical tool. Dr. Brownstein and Dr. Abraham advocate for a strategic approach:

  1. Spot Urinary Test: If individuals are not actively supplementing iodine, spot testing may suffice. However, if iodine supplementation is ongoing, spot testing becomes unreliable. In such cases, the 24-hour iodine loading test offers a more accurate assessment. The 24-hour iodine loading test, developed by Dr. Abraham, revolutionized iodine assessment. Here’s how it works:

  2. Loading Urine Test:

  • Begin by collecting the first morning urine to eliminate any residual iodine.
  • Ingest a standardized dose of iodine (typically 50 mg for adults, adjusted for children).
  • Over the next 24 hours, collect all urine output for analysis.
  • Submit a small sample of the collected urine for measurement.
  • Assess the excretion rate to determine iodine sufficiency.

Through their research efforts, Dr. Abraham and Dr. Brownstein made significant discoveries, among others:

  • Urine Test Results: Through urine testing, they found that more than 98% of the samples analyzed were low in iodine, indicating a widespread deficiency among the population.
  • Iodine Excretion: In healthy individuals with sufficient iodine levels, approximately 95% of the ingested iodine is excreted within 24 hours, leaving a residual pool available for daily utilization. For instance, if an individual consumes 50 mg of iodine, they typically excrete 45 mg of it within that timeframe, leaving a residual pool available for daily utilization. This suggests that the body only needs around 5 mg of iodine to function normally.

When asked about the blood test for detecting urine levels, Dr. David Brownstein expresses skepticism due to poorly defined reference ranges, instead suggesting urinary methods like the loading test.

Finding Your Iodine “Sweet Spot”

In this illuminating interview, Dr. Brownstein contended that iodine deficiency is far more prevalent than acknowledged by mainstream medicine. However, the ideal daily amount remains unclear given the lack of rigorous research on iodine for whole-body wellness.

Before starting any iodine supplementation regimen, it is crucial to assess your iodine levels through appropriate testing methods, such as urinary testing or the 24-hour iodine loading test, as recommended by Dr. Brownstein. This initial evaluation allows for a personalized approach to iodine supplementation based on your individual needs and ensures safe and effective use of iodine products.

Observing your symptoms while gradually increasing dietary iodine can unveil your unique needs. It’s essential to start with low doses and monitor your body’s response, emphasizing the significance of consulting an iodine-literate healthcare professional, especially within holistic healthcare. Additionally, addressing other nutrient imbalances, such as magnesium and Vitamin C, before initiating iodine supplementation can optimize results.

For practical purposes, starting with one to two drops of Lugol’s solution, containing 5% iodine, diluted in a glass of water or juice is recommended. Additionally, adding a pinch of unrefined salt to the solution can aid in absorption and mitigate potential side effects. Adhering to dosage instructions provided by a knowledgeable healthcare professional is crucial to ensure safe and effective iodine supplementation.

A bottle with Lugol's solution (5%) iodine concentration

We are not medical doctors, so please conduct your own research and consult with qualified professionals before beginning any supplementation regimen.

Personal Insights

Incorporating Iodine-Rich Foods into Our Diet

Ensuring adequate iodine intake is a priority in our household, and we achieve this through a variety of foods, including:

  • Seafood: We enjoy seafood occasionally to bolster our iodine intake – we should probably do it more often.
  • Sea Vegetables and Seaweed: Sea moss, in particular, is a staple in our daily diet. We source our sea moss from OneSelf, ensuring a consistent supply of this nutrient-rich algae that we incorporate into our meals and smoothies.
  • Eggs: Regular consumption of eggs provides us with essential nutrients, including iodine. We have loads of eggs.
  • Goat and Sheep Dairy Products: We opt for goat and sheep dairy products, mainly cheese, as part of our iodine-rich diet.

Exploring Hair Mineral Analysis

For us, hair mineral analysis is a familiar tool that offers valuable insights into our body’s mineral levels, including iodine. While it’s important to note that these results aren’t absolute, they provide a helpful reference point for understanding our nutritional status and making informed decisions about supplementation. Consulting with a specialist is crucial before making any supplementation decisions, but we’ve found that this type of testing can be incredibly insightful in guiding our approach to maintaining optimal health.

Conclusion

Interview one with Dr. David Brownstein offers a foundational understanding of iodine’s critical role in maintaining optimal health. Key points include:

  • Historical significance of iodine in eradicating hypothyroidism and goiter.
  • Concerning trends in declining iodine levels over the past half-century coincide with increasing rates of thyroid disorders, fibrocystic breast disease, and cancers.
  • Dr. Brownstein highlights the rise in environmental toxicity, particularly from substances like fluoride and bromide, which compete with iodine for receptor sites in the body.
  • Symptoms of iodine deficiency encompass a range of health issues, emphasizing the importance of individualized care under knowledgeable healthcare professionals.
  • Further insights on iodine’s implications in health are available in Dr. Brownstein’s book, “Iodine: Why You Need It. Why You Can’t Live Without It.”

As interview one lays the groundwork for exploring iodine and its holistic implications for wellbeing, future discussions will delve into specific aspects of iodine and health. Stay tuned for upcoming interviews. For additional resources and information, check the links below. Thank you for joining us, and we look forward to continuing this journey together.

Meanwhile, if you have any insights or comments you’d like to share, please feel free to leave them below!

Resources

  • Summary of Dr. David Brownstein’s views on iodine, including its historical significance, declining levels, and the impact of environmental toxins, as well as the importance of individualized care under knowledgeable healthcare professionals: Iodine, The Rest of the Story

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