Let’s rewind to 1811, when a French chemist named Bernard Courtois accidentally discovered something extraordinary while working with seaweed. That something was iodine — a humble micro nutrient that your body can’t make on its own, yet it’s absolutely vital for your health.
Most of the world’s iodine is found in the sea, tucked away in ocean vegetables like kelp and seaweed. A healthy body holds just 15–20 milligrams of iodine, and around 80% of it lives in your thyroid gland — a butterfly-shaped organ at the base of your neck that’s in charge of your metabolism. But iodine’s influence stretches far beyond that little gland.
Why We Need Iodine
Around two billion people across the globe don’t get enough iodine — that’s nearly a quarter of the world’s population! This shortfall poses serious risks to health and brain development, particularly for pregnant women and babies.
Your body needs iodine to make thyroid hormones, which control metabolism, energy, and brain and bone development in babies. Without it, your thyroid can’t do its job properly, and your body starts running on “low battery”.
Here’s what iodine brings to the table:
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Energy boost: The thyroid drives your body’s energy engine. When iodine is lacking, energy slumps follow. Adequate iodine helps keep metabolism ticking, ensuring your body uses nutrients efficiently and doesn’t store unnecessary fat.
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Brain development: Iodine is crucial for children’s growing brains. A    deficiency can cause learning and developmental challenges later in life.
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Thyroid protection: Iodine even acts like a tiny shield, protecting the    thyroid from harmful radioactive materials and supporting healthy cell    renewal.
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Balanced metabolism: Struggling with sluggishness or feeling constantly tired? A dash of iodine can help revive your metabolism, boost energy, and fight that “can’t get off the sofa” feeling.
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Hormone production: Iodine helps convert thyroid-stimulating hormone (TSH) into active thyroid hormones (T3 and T4). Without it, the thyroid falters, and health problems start creeping in.
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Natural detox: Iodine supports the body’s clean-up crew, helping to flush out heavy metals like mercury and lead, and fighting harmful bacteria linked to ulcers and gut issues.
Fun fact: iodine belongs to the same chemical family as bromine, chlorine, and fluorine. When your iodine levels are healthy, it helps stop those other elements from pushing their way in!
What Depletes Iodine?
In today’s world, many things silently rob us of iodine. These include:
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Baked goods made with bleached; genetically modified flour (contains    bromine)
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Electronics and flame-retardant furniture or carpets (brominated chemicals)
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Pesticides and plastics (especially toys, cosmetics, bottled water, and    packaging)
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Certain prescription drugs
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Soft drinks containing brominated vegetable oil
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Soy products
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Unfiltered tap water (chlorine and fluoride can block iodine)
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Even pool water and rubber products!
When iodine runs low, your thyroid struggles to make hormones. This can lead to serious issues in unborn babies and children, as well as ongoing health problems in adults.
Spotting the Signs of Iodine Deficiency
A shortage of iodine can affect both brain and thyroid function. Look out for these tell-tale signs:
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Fatigue and weakness
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Feeling unusually cold
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Dry or flaky skin
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Hair loss
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Memory or learning problems
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Unexpected weight gain
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A swelling in the neck (called a goitre)
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Changes in heart rate
If any of these sound familiar, it may be worth checking your iodine levels or discussing supplementation with a qualified professional.
Disorders Linked to Iodine Deficiency
When the body doesn’t get enough iodine, several conditions can appear:
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Cretinism: A severe deficiency during pregnancy can cause permanent brain and growth problems in babies, including hearing and speech difficulties.
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Goitre: This is an enlarged thyroid gland that can make swallowing or breathing uncomfortable.
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Hypothyroidism: A sluggish thyroid causes symptoms like tiredness, cold intolerance, constipation, dry skin, and weight gain. Left untreated, it can become serious.
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Impaired brain function: Iodine deficiency is actually the most common preventable cause of brain damage worldwide — affecting hundreds of millions of people.
Iodine vs Iodide — What’s the Difference?
You’ll often see both “iodine” and “iodide” mentioned, and they’re closely related.
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Iodine is the pure mineral found naturally in foods, especially sea vegetables.
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Iodide is the salt form your body creates when it absorbs iodine.
Different body parts have their favourites:
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Breasts and the pituitary gland prefer iodine
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The thyroid prefers iodide
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The prostate likes iodide when healthy but iodine when cancerous
Both are needed — they just work best in different places!
Natural Ways to Boost Iodine
A handy kitchen tip: add iodised salt after cooking, not during, to keep the iodine intact.
On the flip side, some foods — like broccoli, cauliflower, kale, radishes, cabbage, Brussels sprouts, and watercress — can block iodine absorption if eaten in excess, especially when someone’s already low in iodine.
One challenge is that the iodine content of food depends on the soil it’s grown in. If the soil’s low in iodine, the crops will be too — which is why diet alone sometimes isn’t enough. In such cases, iodine supplements can help fill the gap.
A Final Word
Iodine is one of those tiny things that make a massive difference. Without it, your metabolism slows, your energy drops, and your brain can’t function at its best. It’s crucial for both growing children and adults who want to keep their health in balance.
At Deep Blue Sea Holistic, we recommend high-quality forms of iodine, such as:
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Iodine 11 – 15mil (Metabolics) : 10% off Coupon Code 183562
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Metabolic Activator (Cellcore) : Code JRFVL8
Thank you for being part of our Deep Blue Sea Holistic community. Stay well, stay balanced, and keep shining from the inside out!
