The Salt Paradox: How the “Healthiest” Salt in Your Kitchen Might Be Harming You, and the Forgotten Public Health Triumph That Holds the Key

Part I: Introduction: The Wellness Conundrum in My Clinic

For years, a frustrating pattern repeated itself in my clinical research practice. It was a paradox that I, as a medical professional dedicated to evidence-based health, simply couldn’t reconcile. Patients would come to me, not with acute illnesses, but with a vague yet debilitating constellation of symptoms. They were tired, profoundly so. They spoke of a persistent mental fog that made concentration a daily battle. Many were struggling with unexpected weight gain despite meticulous diets and regular exercise. They complained of dry, flaky skin, thinning hair, and a constant sensitivity to cold that had them reaching for a sweater even on mild days.¹

These were not individuals who neglected their health. On the contrary, they were the vanguard of the modern wellness movement. They were educated, proactive, and deeply invested in their well-being. They brought in detailed food logs, proudly pointing to their organic produce, grass-fed meats, and their complete avoidance of processed foods. Standard blood work was almost always maddeningly normal. By all conventional metrics, they were doing everything right.

And in their litany of healthy choices, one detail came up with striking regularity. When I asked about seasoning, they would almost universally report having thrown out their old canister of table salt years ago. In its place was a collection of “superior” salts: coarse kosher salt for cooking, beautiful pink Himalayan salt for their grinders, and artisanal sea salt for finishing their dishes.⁴ They spoke of avoiding “processed” iodized salt as a point of pride, a conscious choice to embrace what was natural and pure.

For a long time, this was my blind spot. I would nod along, commending their dedication, completely missing the crucial clue hidden in plain sight. I was failing to connect their most deliberate “healthy” choice with their most persistent unhealthy symptoms. I was looking at the problem through the lens of modern wellness marketing, not through the lens of fundamental human physiology and public health history.

This repeated failure to solve the puzzle for my patients forced me to confront a fundamental question: How could these well-intentioned, highly informed individuals be suffering from symptoms classic to a nutritional deficiency? What invisible factor were they—and, more humbling, what was I—overlooking in the modern wellness landscape? The answer, I would discover, was not in the latest nutritional trend, but in a forgotten chapter of medical history that had been so successful, it had rendered itself invisible.

Part II: The Invisible Utility—A Public Health Epiphany

The breakthrough in my understanding didn’t come from a medical journal or a nutritional conference. It came from a place I least expected: a book on the history of 19th-century civil engineering. I was reading about the advent of municipal water purification, a development we now take completely for granted. Before filtration and chlorination, water—the very substance of life—was a primary vector for deadly diseases like cholera and typhoid. Cities were regularly ravaged by epidemics traced back to contaminated wells and rivers. The introduction of water treatment was a monumental public health victory, saving millions of lives. We don’t look at a glass of clean tap water and call it “processed” or “unnatural”; we call it safe. It is an invisible, life-sustaining utility.

That was my epiphany. I slammed the book shut, the connection suddenly illuminating years of clinical frustration. I realized that iodized salt is not merely a condiment; it is a public health utility, engineered with the same life-saving intent as clean water or fortified flour. It is a delivery system for an essential micronutrient, designed to eradicate a devastating public health crisis that our society has had the luxury of completely forgetting.⁷

A Forgotten History: The American “Goiter Belt”

To understand the importance of this utility, one must travel back in time to the United States before 1924. A vast swath of the country—encompassing the Great Lakes states, the Pacific Northwest, and the high Appalachians—was known as the “Goiter Belt”.⁸ The soil in these regions, far from the sea, was profoundly deficient in the element iodine.¹⁴

Iodine is a non-negotiable requirement for human health. The body needs it to synthesize thyroid hormones, which are the master regulators of our metabolism, controlling everything from our heart rate and body temperature to our cognitive function.¹⁵ Without enough iodine, the thyroid gland cannot produce these hormones. In a desperate attempt to compensate, the gland begins to grow, forming a large, painful, and often disfiguring swelling on the neck known as a goiter.³

But goiter was only the most visible symptom. The true tragedy of the Goiter Belt was its impact on the next generation. Severe iodine deficiency in pregnant women had catastrophic consequences for fetal development, leading to a condition known as cretinism. Children born with this condition suffered from irreversible intellectual disabilities, stunted growth, and often deaf-mutism.¹⁰ Even mild-to-moderate maternal deficiency was linked to lower IQs and impaired cognitive development in children.⁷ This was a silent, nationwide public health emergency, crippling the potential of millions.

The 1924 Revolution: A Pinch of Salt, A Leap for Mankind

The solution came from the tireless work of public health pioneers like Dr. David Marine and Dr. David Cowie. They recognized that salt, a universally consumed and inexpensive commodity, could serve as the perfect delivery vehicle for iodine.¹⁰ After years of research and intense lobbying of salt manufacturers and a skeptical medical community, their vision became a reality.

On May 1, 1924, the first boxes of iodized salt were sold commercially in Michigan. The Morton Salt Company, seeing the immediate public demand, began national distribution just a few months later.¹⁰

The impact was nothing short of miraculous. Within a decade, the incidence of goiter in Michigan plummeted by as much as 90%.¹⁰ The specter of cretinism began to vanish. The benefits extended far beyond the visible. A landmark 2017 economic study analyzed the long-term effects of this simple intervention. Its findings were stunning: the introduction of iodized salt raised the IQ of the most iodine-deficient quarter of the population by an average of nearly 15 points.¹⁸ It was arguably one of the most effective, low-cost public health triumphs in human history, preventing immeasurable suffering and unlocking human potential on a massive scale.⁸

This historical context reveals a profound truth. The overwhelming success of salt iodization is the direct cause of its current vulnerability. The program worked so well that it erased the very problem it was designed to solve from public memory. Goiter and cretinism became historical footnotes, conditions most modern doctors have never seen. Because the terrifying consequences of iodine deficiency are no longer part of our lived experience, the preventative measure—the iodine in the salt—has lost its perceived urgency. It has been demoted in the public consciousness from a crucial life-saving shield to a mere “additive,” a sign of “processing” to be avoided.¹³ This collective amnesia created the perfect vacuum for marketing to rush in, successfully rebranding the original, unprotected state—non-iodized salt—as a more desirable, “pure,” or “natural” choice.⁵ The modern consumer’s susceptibility to the marketing of gourmet salts is, therefore, a direct and deeply ironic consequence of the program’s unparalleled success.

Part III: A Scientist’s Guide to the Modern Salt Aisle: Deconstructing the Hype

Armed with this “public health utility” framework, the modern salt aisle transforms from a confusing array of lifestyle choices into a straightforward scientific evaluation. Let’s systematically analyze the options.

Pillar 1: The Workhorse — Standard Iodized Table Salt

What It Is: Standard table salt is typically mined from vast, ancient underground salt deposits. It then undergoes a refining process where the raw salt is dissolved, filtered to remove impurities like clay or other mineral deposits, and then recrystallized through vacuum evaporation. This results in a product of very high purity, generally 97% to over 99% sodium chloride (NaCl).²² This refinement creates a clean, consistent, and reliable base for fortification, ensuring that the added iodine can be distributed evenly and remain stable.²⁶

Its Primary Function: The primary purpose of this product is not just to be salty, but to serve as a dependable and incredibly cost-effective delivery vehicle for iodine.⁴ In the United States, iodized salt is fortified to contain 45 milligrams of iodine per kilogram of salt.²⁸ A standard quarter-teaspoon serving (about 1.5 grams) reliably delivers between 68 and 78 micrograms (

μg) of iodine, which constitutes approximately 45% to 52% of the Recommended Dietary Allowance (RDA) for a typical adult.¹² It is, by design, a functional food.

Pillar 2: The “Natural” Contenders — Sea Salt, Kosher Salt, and the Pink Elephant

Sea Salt: As the name implies, sea salt is produced by evaporating seawater. Because it is generally less processed than table salt, it retains trace amounts of other minerals like magnesium, calcium, and potassium, which can contribute to subtle flavor variations and a coarser, crunchier texture.²² However, it is critical to understand that unfortified sea salt contains only negligible, nutritionally insignificant amounts of naturally occurring iodine.²⁷ The idea that it is a meaningful source of iodine simply because it comes from the sea is a dangerous misconception. By weight, it contains the same amount of sodium as table salt and is not inherently healthier.²⁷

Himalayan Pink Salt: This is not sea salt. It is a type of rock salt mined from the Khewra Salt Mine in the Punjab region of Pakistan.³⁴ Its characteristic pink color comes from mineral impurities, primarily iron oxide (rust).²¹ Himalayan salt is the subject of some of the most aggressive and scientifically unsupported marketing in the wellness industry. Claims that it contains “84 essential minerals,” “stored sunlight,” or can “stabilize irregular heartbeats” are baseless.⁵ Rigorous scientific analysis confirms that while it does contain trace minerals, the amounts are far too low to provide any nutritional benefit unless consumed in dangerously high quantities.⁵ It is often sold at an enormous premium, costing up to 20 times more than standard iodized salt, for no discernible health advantage.⁵

Kosher Salt: This salt gets its name from its historical use in the koshering process of meat, where its large, flaky crystals are effective at drawing out blood.³⁴ It is not, unless specified, ritually blessed. Chefs prize it for its coarse texture, which is easy to pinch and control, and for its clean flavor, as it is typically unrefined and not fortified with iodine.³⁴ Like sea salt and Himalayan salt, it is not a source of iodine.

To cut through the confusion, the following table provides a direct, evidence-based comparison.

Salt Type	Source	Typical Iodine Content	Trace Mineral Reality	Sodium Content (by weight)	Key Takeaway
Iodized Table Salt	Mined from underground deposits, then refined.	Fortified to provide ~45% of adult RDA per 1/4 tsp.28	Minerals are removed during refining to create a pure base for fortification.27	~40% Sodium.38	A highly effective, low-cost public health utility designed to prevent iodine deficiency.
Sea Salt	Evaporated from seawater.26	Negligible, not a meaningful source unless explicitly labeled “Iodized”.27	Contains trace minerals (Mg, Ca, K) that may affect flavor but are nutritionally insignificant.27	~40% Sodium.33	A culinary salt valued for texture and flavor; does not protect against iodine deficiency.
Himalayan Pink Salt	Mined from rock salt deposits in Pakistan.34	Negligible, not a meaningful source.5	Contains trace minerals (mostly iron oxide) that provide color but are nutritionally insignificant.22	~40% Sodium.22	An expensive culinary salt with health claims that are not supported by scientific evidence.
Kosher Salt	Mined from salt deposits or from seawater.22	Negligible, not a meaningful source unless explicitly labeled “Iodized”.34	Typically contains no additives or trace minerals; valued for its purity and texture.37	~40% Sodium.22	A chef’s salt prized for its culinary properties; does not protect against iodine deficiency.

Pillar 3: The Additive Question — Demystifying the Label

A major factor driving consumers away from iodized salt is a fear of the “chemical” names on the ingredient list. This “chemophobia” is misplaced. The additives are not contaminants; they are essential functional components of a carefully engineered product.

The Iodine Source (The Nutrient): To iodize salt, a stable iodine compound is added. In the United States and some other countries, this is typically Potassium Iodide (KI).³⁹ In many other parts of the world, especially in warm, humid tropical regions, the more stable compound

Potassium Iodate (KIO3​) is used because it is less prone to degradation.³⁹ Both are safe, bioavailable, and effective sources of iodine.

The Stabilizer (The Protector): Potassium Iodide (KI) can be somewhat unstable. When exposed to air and humidity over time, the iodide can oxidize into elemental iodine, which can then evaporate, causing the salt to lose its potency.⁴⁰ To prevent this, a stabilizer is added. This is typically

Dextrose, a simple sugar, in a minute amount—around 0.04% by weight.⁴⁵ Its sole purpose is to act as a reducing agent, protecting the iodine from degrading and ensuring it remains in the salt until it reaches your plate. The amount is so small it is nutritionally negligible and has no impact on blood sugar in the context of salt consumption.⁴⁰

The Anti-Caking Agent (The Flow Agent): Salt is hygroscopic, meaning it attracts moisture from the air. This can cause it to clump together, making it difficult to pour from a shaker. To prevent this, an anti-caking agent is added to keep the salt crystals separate and free-flowing. Common examples include Calcium Silicate or Yellow Prussiate of Soda (Sodium Ferrocyanide).⁵⁰ While a name like “sodium ferrocyanide” may sound alarming, the cyanide is tightly bound within the iron molecule and is not released in the body. These additives are approved as “Generally Recognized as Safe” (GRAS) by the U.S. Food and Drug Administration (FDA) and are used in tiny, safe quantities, typically less than 13 parts per million.⁵⁵

The table below clarifies the role of these essential components.

Additive Category	Chemical Name(s)	Purpose in Salt	Safety & Context
The Nutrient	Potassium Iodide (KI), Potassium Iodate (KIO3​)	The active ingredient; provides the essential micronutrient iodine to the body.40	Safe and effective compounds used globally for iodine fortification. KIO3​ is more stable in humid climates.39
The Protector	Dextrose (a simple sugar)	Stabilizes the potassium iodide, preventing it from oxidizing and evaporating, thus preserving the iodine content.45	Used in a nutritionally insignificant amount (~0.04%). Essential for ensuring the product’s effectiveness.48
The Flow Agent	Calcium Silicate, Sodium Silicoaluminate, Yellow Prussiate of Soda (Sodium Ferrocyanide)	Prevents salt crystals from clumping together by absorbing moisture, ensuring the salt remains free-flowing.50	Approved by the FDA as safe in the small quantities used. Essential for product usability and quality.56

This analysis reveals another layer of irony in the wellness marketplace. The marketing of “natural” salts has successfully framed “purity”—defined as the absence of these additives—as a virtue. Yet, when we view salt as a public health utility, this so-called purity is actually a profound functional flaw. The additives in iodized salt are not impurities; they are essential components that ensure the product’s efficacy, stability, and usability. Choosing a salt for its “purity” from these components is like buying a car and bragging that it’s superior because it has been stripped of its seatbelts, airbags, and antifreeze. The marketing has managed to completely invert virtue and flaw.

Part IV: The Iodine Equation: A Personal Health Audit

With a clear understanding of the science and history, the next step is to apply it to your own health. The re-emergence of iodine deficiency is a real and growing concern, particularly among the most health-conscious segments of the population.

Are You at Risk? A Symptom and Lifestyle Checklist

The symptoms of iodine deficiency are often subtle and can be easily mistaken for general stress or burnout, which is why they so often went unrecognized in my patients. Consider if you or a loved one experiences several of the following ³:

• Persistent Fatigue and Weakness: A feeling of being drained or sluggish that a full night’s sleep doesn’t fix.²
• Unexpected Weight Gain: Gaining weight despite no significant changes in diet or activity level, a direct result of a slowed metabolism.²
• Cognitive Issues (“Brain Fog”): Difficulty concentrating, memory lapses, or a general feeling of mental slowness.¹⁶
• Hair and Skin Changes: Dry, flaky skin that doesn’t respond to moisturizers, and noticeable hair loss or thinning, sometimes including the outer third of the eyebrows.²
• Sensitivity to Cold: Feeling colder than others or having an unusual intolerance to cool temperatures.¹
• Neck Swelling (Goiter): A visible lump or feeling of tightness at the base of the neck.³
• Mood Changes: Unexplained feelings of depression or low mood.¹

Certain lifestyles and dietary patterns significantly increase the risk of developing a deficiency ⁵⁹:

• You deliberately use non-iodized salt (e.g., Himalayan, most sea salt, kosher salt) for all your cooking and seasoning.
• You are pregnant or breastfeeding, as iodine needs increase dramatically to support fetal and infant brain development.¹⁴
• You follow a vegan or largely dairy-free diet, as dairy products are a significant source of iodine in the Western diet.¹⁵
• You rarely consume seafood or seaweed, which are the richest natural sources of iodine.⁶²
• You eat very few commercially baked goods, as some bread is made with iodate dough conditioners.¹²

Your Daily Iodine Budget: A Practical Guide to Requirements

The amount of iodine you need varies by age and life stage. The following table consolidates the Recommended Dietary Allowances (RDA) from leading health authorities.

Life Stage/Age Group	Recommended Dietary Allowance (RDA) in Micrograms (μg) per day
Infants 0–12 months	110–130 μg (Adequate Intake) 63
Children 1–8 years	90 μg 64
Children 9–13 years	120 μg 64
Adolescents 14–18 years	150 μg 63
Adults 19+ years	150 μg 14
Pregnant Women	220 μg 14
Lactating Women	270–290 μg 14

Note: The Tolerable Upper Intake Level (UL) for adults is 1,100 μg/day. Exceeding this regularly, often through high-dose supplements or excessive consumption of certain seaweeds, can also cause thyroid problems.⁵⁹

The Processed Food Trap and the “Healthy Eater’s” Dilemma

Here we arrive at the central, counter-intuitive trap for the modern health-conscious individual. More than 70% of the sodium in the typical American diet comes not from the salt shaker, but from processed, packaged, and restaurant foods.²² Critically, manufacturers of these foods almost never use iodized salt.¹³

This creates a dangerous scenario. When a person decides to “eat clean,” they typically do two things simultaneously: they drastically reduce their intake of processed foods to lower their sodium and avoid additives, and they switch their home salt shaker to a “purer,” non-iodized gourmet salt.

The first step, reducing processed food, is excellent for cardiovascular health but also eliminates a massive, albeit non-iodized, source of salt from their diet. The second step, switching to a non-iodized gourmet salt, removes their last line of defense. The net result is the near-total elimination of iodine fortification from their diet. They have unknowingly created a significant nutritional gap precisely because they were trying to be healthy. This is the paradox that was playing out in my clinic day after day—a nutritional deficiency born not of poverty or lack of access, but of a well-intentioned pursuit of health that was guided by marketing instead of public health science.

Part V: The Verdict: How to Choose the Best Salt for Your Health

Navigating the salt aisle doesn’t have to be complicated. By ignoring the marketing noise and focusing on the public health function of salt, the choice becomes simple and clear.

My 3-Step Checklist for Reading a Salt Label

When you pick up a container of salt, perform this simple audit:

1. Look for the word “IODIZED.” This is the single most important piece of information on the package. It should be clearly printed on the front label. If it’s not there, you must assume the salt provides no meaningful amount of iodine and will not protect against deficiency.¹³
2. Check the Ingredients. Turn the package over. Confirm the presence of an iodine source like “potassium iodide.” Then, view the other additives—dextrose, calcium silicate, yellow prussiate of soda—not as red flags, but as positive indicators of a stable, functional, and well-engineered public health product.³¹
3. Ignore the Marketing Hype. Consciously disregard claims about geographic origin (“Himalayan”), color (“pink”), harvesting method (“sun-dried”), or vague health benefits (“contains 84 minerals”). These are marketing tactics designed to justify a higher price, not to convey meaningful health information.⁵

Brand Analysis: A Review of Common North American Iodized Salts

On North American store shelves, you will find several reliable options that meet the criteria of a good public health utility.

• Morton: As a historical leader in salt iodization, Morton’s iconic blue canister of Iodized Table Salt is the benchmark product. Its ingredient list is a case study in functional food science: salt, calcium silicate (anti-caking agent), dextrose (stabilizer), and potassium iodide (nutrient).³¹ To illustrate the principle that the source of salt is secondary to its fortification, look no further than
  Morton Iodized Sea Salt. It contains sea salt, yellow prussiate of soda (anti-caking agent), dextrose, and potassium iodide.⁶⁶ This product effectively combines the culinary preference for sea salt with the non-negotiable public health benefit of iodine.
• Diamond Crystal: This is another major brand trusted by both home cooks and professional chefs. Their standard Iodized Table Salt is formulated similarly to Morton’s.⁵⁴ It is crucial to note, however, that their highly-regarded
  Kosher Salt is famously not iodized, containing only salt.³⁷ This highlights the need for consumer vigilance; brand loyalty is not enough, you must read the label of the specific product.
• Major Producers (Cargill, Compass Minerals): While you may not see these names on a small shaker, they are the industrial giants that produce much of the food-grade salt in North America. Their product specification sheets for food-grade iodized salt confirm the use of these standard, functional ingredients and strict adherence to USDA, FDA, and Food Chemical Codex standards.⁶⁵ This underscores the safety, consistency, and reliability of standard iodized salt products across the industry.

The Final Recommendation: A Nuanced Strategy

Based on a century of evidence, the recommendation is clear and straightforward.

• For the vast majority of households, the best salt is any brand of standard iodized table salt or a salt explicitly labeled “Iodized Sea Salt.” The specific brand name is far less important than the word “iodized.” This is the most reliable, affordable, and consistent method for ensuring adequate iodine intake and preventing deficiency.⁴
• If you enjoy the texture or flavor of sea salt, actively seek out a brand that is explicitly fortified, such as Morton Iodized Sea Salt.⁶⁶ Do not assume any sea salt contains adequate iodine, because it almost certainly does not.
• It is perfectly acceptable to use non-iodized gourmet salts (Himalayan, kosher, fleur de sel) as “finishing salts”—a final sprinkle on a dish for a burst of flavor and texture. However, these should be considered a culinary garnish, not your primary, everyday salt for cooking and seasoning, unless you are meticulously tracking and ensuring adequate iodine intake from other dietary sources like seafood, dairy, eggs, and certain seaweeds.⁴⁷

Part VI: Conclusion: Reclaiming a Public Health Masterpiece

I often think back to one particular patient, a young woman who was the epitome of the wellness-driven individual I described at the beginning of this report. She was a yoga instructor, ate a nearly perfect plant-based diet, and was deeply frustrated by the brain fog and fatigue that clouded her life. She was proud of her beautiful pink Himalayan salt, seeing it as a symbol of her commitment to a natural lifestyle.

After our long discussion about the history of the Goiter Belt and the “public health utility” of salt, she was skeptical. It ran counter to everything she had been taught by wellness influencers and health food store marketing. But she was also desperate for a solution. She reluctantly agreed to a simple experiment: for three months, she would swap her expensive pink salt for a $1.50 canister of standard iodized table salt.

When she returned for her follow-up appointment, the transformation was remarkable. Her energy was back. The fog had lifted. “I feel like myself again,” she said, a sense of wonder in her voice. “I can’t believe the answer was that simple, and that I was paying so much more for something that was actually making me sick.” Her story is a powerful, human-scale validation of a population-scale scientific truth.

The choice you make in the salt aisle is more than a culinary preference; it is a health decision with a century of overwhelming evidence behind it. Choosing iodized salt is a simple, intelligent act of self-care and a participation in one of the most successful public health initiatives in human history. Don’t let clever marketing, aesthetic appeal, or misplaced fear dismantle a masterpiece of science. Your health, your cognitive function, and the well-being of future generations may depend on that simple, humble shake of an iodized saltshaker.

Works cited

1. www.healthdirect.gov.au, accessed on August 8, 2025, https://www.healthdirect.gov.au/iodine-deficiency
2. 7 early signs of iodine deficiency you shouldn’t ignore, accessed on August 8, 2025, https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/7-early-signs-of-iodine-deficiency-you-shouldnt-ignore/photostory/123084703.cms
3. 10 Signs and Symptoms of Iodine Deficiency – Healthline, accessed on August 8, 2025, https://www.healthline.com/nutrition/iodine-deficiency-symptoms
4. Do Sea Salt, Kosher Salt and Pink Salt Beat Table Salt? – Cleveland Clinic Health Essentials, accessed on August 8, 2025, https://health.clevelandclinic.org/do-sea-salt-kosher-salt-and-pink-salt-beat-table-salt
5. Himalayan salt – Wikipedia, accessed on August 8, 2025, https://en.wikipedia.org/wiki/Himalayan_salt
6. Iodized vs. Noniodized Salt: What’s the Difference? – GoodRx, accessed on August 8, 2025, https://www.goodrx.com/well-being/diet-nutrition/iodized-and-non-iodized-salt-differences
7. Editorial: Iodine in health and disease – Frontiers, accessed on August 8, 2025, https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2023.1260834/full
8. Iodized Salt | Global Health NOW, accessed on August 8, 2025, https://globalhealthnow.org/object/iodized-salt
9. Switching the World’s Salt Supply—Learning from Iodization to Achieve Potassium Enrichment – PubMed Central, accessed on August 8, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC10730351/
10. A Grain of Salt | Milbank Quarterly, accessed on August 8, 2025, https://www.milbank.org/quarterly/articles/a-grain-of-salt/
11. Iodine, the secret weapon of hibernating ground squirrels and trauma patients, accessed on August 8, 2025, https://www.fredhutch.org/en/news/center-news/2020/10/roth-iodine-essential-element.html
12. Iodine – Health Professional Fact Sheet – NIH Office of Dietary Supplements, accessed on August 8, 2025, https://ods.od.nih.gov/factsheets/Iodine-HealthProfessional/
13. Iodine Is Important and You May Not Be Getting as Much as You Think | Columbia Surgery, accessed on August 8, 2025, https://columbiasurgery.org/news/iodine-important-and-you-may-not-be-getting-much-you-think
14. Iodine | Linus Pauling Institute | Oregon State University, accessed on August 8, 2025, https://lpi.oregonstate.edu/mic/minerals/iodine
15. Vitamins and minerals – Iodine – NHS, accessed on August 8, 2025, https://www.nhs.uk/conditions/vitamins-and-minerals/iodine/
16. Iodine – Consumer – NIH Office of Dietary Supplements, accessed on August 8, 2025, https://ods.od.nih.gov/factsheets/Iodine-Consumer/
17. History of U.S. Iodine Fortification and Supplementation – PMC, accessed on August 8, 2025, https://pmc.ncbi.nlm.nih.gov/articles/PMC3509517/
18. SALT IODIZATION AND THE ENFRANCHISEMENT OF THE AMERICAN WORKER – The Society of Labor Economists, accessed on August 8, 2025, https://www.sole-jole.org/assets/docs/14193.pdf
19. en.wikipedia.org, accessed on August 8, 2025, https://en.wikipedia.org/wiki/Iodised_salt#:~:text=On%20May%201%2C%201924%2C%20iodised,population%20most%20deficient%20in%20iodine.
20. kathleenflinn.com, accessed on August 8, 2025, https://kathleenflinn.com/why-is-there-iodine-in-table-salt/#:~:text=Bluntly%20put%2C%20unrefined%20salt%20has,caking%20agent%20and%20added%20iodine%20.
21. Don’t fall for the marketing hype behind many expensive salts, accessed on August 8, 2025, https://sacredvalleytradingco.com/salt/no-hype-zone
22. Table salt, kosher salt, sea salt, Himalayan salt. Which one should I buy? – McGill University, accessed on August 8, 2025, https://www.mcgill.ca/oss/article/health-nutrition-you-asked/table-salt-kosher-salt-sea-salt-himalayan-salt-which-one-should-i-buy
23. What is the difference between pink salt, table salt, kosher salt, sea salt, and rock salt? – Quora, accessed on August 8, 2025, https://www.quora.com/What-is-the-difference-between-pink-salt-table-salt-kosher-salt-sea-salt-and-rock-salt
24. STANDARD FOR FOOD GRADE SALT, accessed on August 8, 2025, https://www.fao.org/fao-who-codexalimentarius/sh-proxy/zh/?lnk=1&url=https%253A%252F%252Fworkspace.fao.org%252Fsites%252Fcodex%252FStandards%252FCXS%2B150-1985%252FCXS_150e.pdf
25. How pure NaCl is typical table salt? How is it purified? – Chemistry Stack Exchange, accessed on August 8, 2025, https://chemistry.stackexchange.com/questions/24816/how-pure-nacl-is-typical-table-salt-how-is-it-purified
26. Sea salt vs. table salt: What’s the difference? – Mayo Clinic, accessed on August 8, 2025, https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/sea-salt/faq-20058512
27. Sea salt vs. table salt: Differences and health benefits – Medical News Today, accessed on August 8, 2025, https://www.medicalnewstoday.com/articles/326519
28. Mayo Clinic Q and A: Sea salt and sufficient iodine intake, accessed on August 8, 2025, https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-sea-salt-and-sufficient-iodine-intake/
29. Iodine nutrition: iodine content of iodized salt in the United States – PubMed, accessed on August 8, 2025, https://pubmed.ncbi.nlm.nih.gov/18351111/
30. Morton Iodized Salt & Black Pepper – Raley’s, accessed on August 8, 2025, https://www.raleys.com/product/60653367/morton-iodized-salt-black-pepper
31. Morton® Iodized Table Salt, 26 oz – Kroger, accessed on August 8, 2025, https://www.kroger.com/p/morton-iodized-table-salt/0002460001003
32. ign.org, accessed on August 8, 2025, https://ign.org/latest/blog/iodized-or-sea-salt/#:~:text=Fact%3A%20Raw%20sea%20salt%20does,requirements%2C%20other%20sources%20are%20required.
33. Iodized salt or sea salt? – IGN – Iodine Global Network, accessed on August 8, 2025, https://ign.org/latest/blog/iodized-or-sea-salt/
34. Kosher Salt: What It Is, Vs. Other Types of Salt, and More – Healthline, accessed on August 8, 2025, https://www.healthline.com/nutrition/different-types-of-salt
35. Bought Pink Himalayan Salt? You May Be Eligible For Compensation, accessed on August 8, 2025, https://www.kazlg.com/himalayan-salt-investigation/
36. Once and for all: Is Himalayan salt a scam or not? : r/nutrition – Reddit, accessed on August 8, 2025, https://www.reddit.com/r/nutrition/comments/49cwt1/once_and_for_all_is_himalayan_salt_a_scam_or_not/
37. Diamond Crystal® Kosher Salt is Pure and Natural – Cargill, accessed on August 8, 2025, https://www.cargill.com/salt-in-perspective/diamond-crystal-salt-is-pure-and-natural
38. Sodium Sources: Where Does All That Sodium Come From? | American Heart Association, accessed on August 8, 2025, https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/sodium/sodium-sources
39. Potassium iodate | Center for Science in the Public Interest, accessed on August 8, 2025, https://www.cspi.org/article/potassium-iodate
40. Iodised salt – Wikipedia, accessed on August 8, 2025, https://en.wikipedia.org/wiki/Iodised_salt
41. If Potassium Iodide Becomes Potassium Iodate In Salt, Do You Dare To Eat Salt?, accessed on August 8, 2025, https://www.njchm.com/service/if-potassium-iodide-becomes-potassium-iodate-in-salt.html
42. Iodine Stability in Commercial Salt Brands in Nigeria – Neliti, accessed on August 8, 2025, https://media.neliti.com/media/publications/265054-iodine-stability-in-commercial-salt-bran-39efc873.pdf
43. THE STABILITY OF POTASSIJM IODATE IN CRUDE TABLE SALT *, accessed on August 8, 2025, https://iris.who.int/bitstream/handle/10665/265623/PMC2538103.pdf?sequence=1&isAllowed=y
44. Potassium iodide – Wikipedia, accessed on August 8, 2025, https://en.wikipedia.org/wiki/Potassium_iodide
45. Iodized Salt – Flinn Scientific, accessed on August 8, 2025, https://www.flinnsci.com/api/library/Download/b8b3fd746be6468fb5180a78b3e64d72
46. Yikes! There’s Sugar in Our Salt Don Mercer Associate Professor, Food Science Kemptville Campus University of Guelph While fi – IUFoST, accessed on August 8, 2025, https://iufost.org/iufostold/wp-content/uploads/Sugar%20in%20the%20Salt+pic.pdf
47. Does Real Salt Have the Iodine We Need? – Redmond Life, accessed on August 8, 2025, https://redmond.life/blogs/live-your-journey/does-real-salt-have-the-iodine-we-need
48. Hidden dextrose in…salt… : r/keto – Reddit, accessed on August 8, 2025, https://www.reddit.com/r/keto/comments/6yhama/hidden_dextrose_insalt/
49. Why does table salt contain dextrose? Isn’t that a different form of sugar? – ECHEMI, accessed on August 8, 2025, https://www.echemi.com/community/why-does-table-salt-contain-dextrose-isn-t-that-a-different-form-of-sugar_mjart22041014434_476.html
50. Salt and additives: do they always go hand in hand? | ZOUTMAN, accessed on August 8, 2025, https://www.zoutman.com/en/academy/salt-and-additives-do-they-always-go-hand-in-hand
51. Anticaking agent – Wikipedia, accessed on August 8, 2025, https://en.wikipedia.org/wiki/Anticaking_agent
52. Article Download (1513) – World Journal of Pharmaceutical and Life Sciences, accessed on August 8, 2025, https://www.wjpls.org/download/article/26042018/1525428965.pdf
53. Morton® Iodized Table Salt, 26 oz – Jay C Food Stores, accessed on August 8, 2025, https://www.jaycfoods.com/p/morton-iodized-table-salt/0002460001003
54. Diamond Crystal Table Iodized Salt, 4 Pound (Pack of 2) – eBay, accessed on August 8, 2025, https://www.ebay.com/itm/335787907952
55. Pick Your Poison: Anti-Caking Agents – MenuTrinfo, accessed on August 8, 2025, https://menutrinfo.com/blog/pick-poison-anti-caking-agents/
56. 21 CFR Part 172 Subpart E — Anticaking Agents – eCFR, accessed on August 8, 2025, https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-172/subpart-E
57. Anti-Caking Agents – Center for Research on Ingredient Safety, accessed on August 8, 2025, https://cris.msu.edu/news/summer-staple-ingredients/anti-caking-agents/
58. Iodine Deficiency Causes, Treatment, and Prevention – Baptist Health, accessed on August 8, 2025, https://www.baptisthealth.com/blog/recipes/iodine-deficiency-causes-treatment-and-prevention
59. Iodine • The Nutrition Source, accessed on August 8, 2025, https://nutritionsource.hsph.harvard.edu/iodine/
60. Iodine Deficiency | Temple Health, accessed on August 8, 2025, https://www.templehealth.org/services/conditions/iodine-deficiency
61. Iodine Deficiency: Symptoms, Causes, Treatment & Prevention – Cleveland Clinic, accessed on August 8, 2025, https://my.clevelandclinic.org/health/diseases/23417-iodine-deficiency
62. Iodine in Diet – UF Health, accessed on August 8, 2025, https://ufhealth.org/conditions-and-treatments/iodine-in-diet
63. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc – NCBI Bookshelf, accessed on August 8, 2025, https://www.ncbi.nlm.nih.gov/books/NBK222323/
64. Iodine | Eat For Health, accessed on August 8, 2025, https://www.eatforhealth.gov.au/nutrient-reference-values/nutrients/iodine
65. Hi-Grade Iodized Salt – Cargill, accessed on August 8, 2025, https://www.cargill.com/doc/1432149999999/salt-3888-hi-grade-iodized-product-sheet.pdf
66. Morton Iodized Sea Salt – Food City, accessed on August 8, 2025, https://www.mifoodcity.com/product/60653361/morton-sea-salt-iodized
67. Diamond Crystal Iodized Salt | Fig App, accessed on August 8, 2025, https://foodisgood.com/product/diamond-crystal-iodized-salt/
68. Diamond Crystal Salt Co. Kosher Salt Flakes, 26 oz – King Kullen, accessed on August 8, 2025, https://www.shopkingkullen.com/product/diamond-crystal-salt-co-kosher-salt-flakes-26-oz-id-00013600020033
69. Special Purity Home | Special Purity, accessed on August 8, 2025, https://specialpuritysalt.com/
70. Standard Granulated Salts | Cargill, accessed on August 8, 2025, https://www.cargill.com/food-beverage/na/standard-granulated-salts