Thyroid: The small gland controlling energy, weight, and mood

The butterfly-shaped thyroid gland, nestled at the base of the neck, wields significant influence over the body's fundamental functions. It produces key hormones, thyroxine (T4) and triiodothyronine (T3), which are crucial for regulating metabolism. These hormones dictate everything from heart rate and blood pressure to body temperature and weight. When this small gland falters, the entire body feels the repercussions.

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taking ten cups of coffee.

Thyroid dysfunction presents in two primary forms. Hypothyroidism, the more common condition affecting 2-3% of the population, occurs when the gland doesn't produce enough thyroid hormone. Symptoms, often developing subtly over years, include fatigue, weight gain, cold sensitivity, constipation, dry skin, muscle weakness, and depression. Conversely, hyperthyroidism occurs when the thyroid produces too much hormone, accelerating metabolism. This can lead to unintentional weight loss, rapid or irregular heartbeats, nervousness, anxiety, irritability, tremors, and increased heat sensitivity, which one endocrinologist likened to "drinking ten cups of coffee."

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When the thyroid is sick and produces little hormone, metabolism slows down and people gain on average three or four pounds.

Endocrinologists frequently encounter misconceptions, particularly regarding the thyroid's link to weight gain. Dr. Juan P. Brito Campana of Mayo Clinic clarifies that while an underactive thyroid can cause a modest weight increase (typically three to four pounds), this usually only becomes noticeable after a long period of undiagnosed and untreated illness. He also cautions against the proliferation of internet-sold supplements promising thyroid health. While iodine is essential, most modern diets and iodized salt provide sufficient amounts. Excessive iodine intake, he warns, can paradoxically trigger hyperthyroidism in some individuals.

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But it has to be undiagnosed and untreated for a long time for it to manifest in that way.

Maintaining thyroid health, according to Dr. Brito Campana, is primarily achieved through a balanced diet, making extra iodine supplements unnecessary. The thyroid's influence extends beyond metabolism, significantly impacting mood and overall well-being. Understanding its function and seeking professional advice are key to managing its delicate balance.

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There are products that carry the name 'thyroid health' and contain very high concentrations of iodine and although iodine is essential for the thyroid to function correctly, nowadays food and salt already have the necessary iodine.