Deficiency or excess of which nutrient can cause goiter?

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Multiple Choice

Deficiency or excess of which nutrient can cause goiter?

Explanation:
Goiter results from a disruption in thyroid hormone production that hinges on iodine availability. The thyroid uses iodine to make the hormones T4 and T3. When iodine is deficient, the gland can’t produce enough hormones, so the pituitary releases more TSH to stimulate the thyroid. That continual stimulation makes the thyroid enlarge, causing goiter. In some people, excessive iodine intake can also trigger thyroid changes that lead to enlargement, especially in those with underlying susceptibility. The other nutrients listed don’t directly affect thyroid hormone synthesis or thyroid growth, so they aren’t typical causes of goiter.

Goiter results from a disruption in thyroid hormone production that hinges on iodine availability. The thyroid uses iodine to make the hormones T4 and T3. When iodine is deficient, the gland can’t produce enough hormones, so the pituitary releases more TSH to stimulate the thyroid. That continual stimulation makes the thyroid enlarge, causing goiter. In some people, excessive iodine intake can also trigger thyroid changes that lead to enlargement, especially in those with underlying susceptibility. The other nutrients listed don’t directly affect thyroid hormone synthesis or thyroid growth, so they aren’t typical causes of goiter.

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