If a patient with Hashimoto's thyroiditis takes excessive iodine supplements while also having a deiodinase enzyme deficiency, which consequence is most likely?

💡 Explanation

Excessive iodine intake can worsen hypothyroidism in Hashimoto's patients, particularly with deiodinase deficiency, because the Wolff-Chaikoff effect, a negative feedback loop, becomes prolonged due to the impaired conversion of T4 to T3. Therefore, hypothyroidism is exacerbated, rather than hormone synthesis increasing or receptor sensitivity being enhanced, because the thyroid can't effectively process the iodine.

• Why does reduced GnRH pulse frequency impair fertility in females undergoing assisted reproductive technology (ART)?
• If a patient's inflammation fails to resolve after an infection, which immunological consequence is most likely?
• Why does skin graft contraction occur during wound healing?
• Why does a sensory neuron's action potential amplitude remain constant despite varying stimulus intensities?
• In human fertilization, what causes the initial block to polyspermy after sperm-egg fusion?
• Why does escalating drug use often lead to compulsive behavior despite diminishing euphoric effects in the reward circuitry?