Iodine & Bromine Testing

Why is Iodine Important?

Iodine is an essential nutrient that is critical in thyroid function, metabolism, and brain development. It is a key component of thyroid hormones T3 and T4, which regulate the body’s ability to convert stored energy into usable energy.

Even mild iodine deficiency can lead to:

• Weight gain – A sluggish metabolism can make it difficult to maintain a healthy weight.
• Fatigue – Low thyroid function often results in low energy levels.
• Cognitive impairment & depression – Inadequate iodine can slow brain function and contribute to mood disorders.
• Fibrocystic breast disease – Iodine supplementation has been shown to improve symptoms.
• Increased cancer risk – Adequate iodine intake may help protect against breast, thyroid, and prostate cancer.

Iodine Deficiency in Canada

According to the Canadian Health Measures Survey (2009-2011), 22% of Canadians aged 3 and over have mild iodine deficiency, while 7% have moderate deficiency. Factors contributing to declining iodine levels include:

• Reduced use of iodized salt due to low-sodium dietary trends.
• Increased consumption of processed foods that use non-iodized salt.
• Declining iodine content in dairy products due to changes in industry disinfectants.
• Increased exposure to bromine, which interferes with iodine absorption.

Why Test for Iodine & Bromine?

Testing iodine levels helps determine if supplementation is necessary. Too much iodine can shut down thyroid hormone production, leading to hypothyroidism, so it’s crucial to test before supplementing.

Bromine is a chemical competitor of iodine—it interferes with the thyroid’s ability to absorb iodine. Testing bromine levels helps assess whether excess bromine exposure may impact thyroid function.

How Testing Works

Firstline Testing measures iodine and bromine through either:

• First-morning urine sample – A convenient at-home test.
• 24-hour urine collection – Preferred for a more comprehensive assessment.

Results are compared to World Health Organization (WHO) standards for iodine sufficiency in men, women, and pregnant individuals.

Sources of Iodine & Bromine

Iodine Sources

Natural sources – Seafood, seaweed, eggs, and dairy products.

Fortified sources – Iodized table salt.

Medical uses – Disinfectants, contrast agents in radiology.

Bromine Sources

Disinfectants – Pool and hot tub chemicals.

Pesticides – Found in some agricultural products.

Flame retardants – Used in furniture and electronics.

Medications – Some asthma inhalers contain bromine.

Take Control of Your Thyroid Health

Testing for iodine and bromine levels provides valuable insight into thyroid function, metabolic health, and nutrient balance. Ensuring adequate iodine intake and minimizing bromine exposure can support energy levels, cognitive function, and overall well-being.

Call (587) 805-1520 to book your Iodine & Bromine test today!