Those with thyroid problems should avoid eating large amounts of cabbage. It interfere with the bodys absorption of iodine, needed by the thyroid gland. This applies to all cruciferousvegetables. The vegetable is a storehouse of phytochemicals like thiocyanates, indole3carbinol, lutein, zeaxanthin, sulforaphane, and isothiocyanates. These compounds are powerful antioxidants and known to help protect against breast, colon, and prostate cancers and help reduce LDL or bad cholesterol levels in the blood.