Broccoli Sprout Extract in Treating Women Who Have Had a Mammogram and Breast Biopsy

INCLUSION CRITERIA: * Diagnostic mammogram * English speaking EXCLUSION CRITERIA: * Pregnancy (as determined by urine human chorionic gonadotropin (hCG) test) * No biopsy referral after diagnostic mammogram * Patient reported breast feeding * Significant active medical illness which in the opinion of the investigator would preclude protocol treatment * History of or active liver disease or baseline total bilirubin greater than institutional upper limit of normal * Patient reported allergy or sensitivity to cruciferous vegetables * Use of oral antibiotics within three months prior to randomization * Oral steroid therapy at enrollment * Current therapy with valproate acid or SAHA * Current use of nutrient supplements or herbal remedies containing sulforaphane and unwillingness or inability to quit 72 hours prior to randomization and for the duration of the trial * Radiation for currently-diagnosed disease prior to or during study supplementation * Chemotherapy for currently-diagnosed disease prior to or during study supplementation