cruciferous
3 interactions related to cruciferous
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.
broccoli + warfarin
Broccoli is rich in vitamin K1 (phylloquinone), the very cofactor warfarin blocks to suppress clotting factor synthesis. Large or wildly inconsistent intake can lower the INR and reduce warfarin's anticoagulant effect, raising clot risk.
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.