The thyroid gland uses iodine to produce thyroid hormones, but an overload can disrupt this process. Excessive iodine can lead to conditions such as hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid). In some cases, it can cause a condition known as the Wolff-Chaikoff effect, where the gland temporarily reduces hormone production to protect itself from excess iodine.
