An individual with iodine deficiency consumes excess cruciferous vegetables (e.g., broccoli, cabbage). Which consequence follows from the increased intake of glucosinolates?

💡 Explanation

Glucosinolates in cruciferous vegetables inhibit iodine uptake in the thyroid, further impairing thyroid hormone synthesis in iodine-deficient individuals and causing goiter development via hypertrophy and hyperplasia. This is because the thyroid stimulating hormone (TSH) continues stimulating the thyroid gland, therefore promoting growth rather than normal hormone production. The result is goiter.

• An IVF patient receives progesterone supplementation during the luteal phase. Which outcome is most likely if progesterone secretion remains abnormally low despite supplementation?
• Which outcome results when systemic vascular resistance increases during heart relaxation?
• Why does chronic lymphatic drainage failure in the lower limbs increase susceptibility to soft tissue infections like cellulitis?
• What distinguishes the near-focus accommodation reflex in a 20-year-old from that in a 60-year-old regarding lens curvature?
• A person stares intently at a rapidly flickering light, experiencing increasingly vivid and distorted visual hallucinations. Which mechanism explains this altered perception?
• If a hospital patient's infection suddenly becomes resistant to multiple antibiotics after a roommate is treated for a separate infection, which mechanism is most likely?