goitrogen
2 interactions related to goitrogen
cabbage + levothyroxine
Cabbage releases thiocyanates from glucosinolates that compete with iodide uptake at the thyroid sodium-iodide symporter. Case reports tie very heavy raw cabbage intake (1+ kg/day) to severe hypothyroidism, but typical cooked portions do not measurably affect levothyroxine requirements when iodine is adequate.
cabbagelevothyroxinethyroidgoitrogenhypothyroidismcruciferousthiocyanateiodine
cauliflower + levothyroxine
Cauliflower contains glucosinolates that can release thiocyanates competing with iodine uptake, theoretically increasing thyroid hormone demand. In practice, a comprehensive systematic review found brassica vegetables at normal dietary intakes do not impair thyroid function when iodine is adequate.
cauliflowerlevothyroxinethyroidgoitrogenhypothyroidismcruciferousiodinesynthroid