Trial of Curcumin to Prevent Progression of Low-risk Prostate Cancer Under Active Surveillance

Inclusion Criteria: * Age between 40-89 years * Biopsy proven, low-risk, localized prostate cancer (minimum of 8 cores) * May have had biopsy within last 12 months * ≤4 separate locations in the prostate involved with cancer. If multiple cores are obtained from same lesion or area than this will count as one location. * Gleason score ≤6 with no Gleason pattern 4 * Clinical stage T1c-T2a/b * Serum PSA ≤15 ng/ml * Life expectancy \> 5 years Exclusion Criteria: * Any previous prostate cancer treatment (radiotherapy, chemotherapy, hormonal therapy, oral glucocorticoids, GnRH analogues, prostatectomy) * Concurrent or previous use within 6 months of screening of any 5α-reductase inhibitor * Use of anabolic steroids or drugs with antiandrogenic properties * Prostate volume \>150 cm³ * Patients who are taking antiplatelet, anticoagulant agents or have a history of a bleeding disorder. Patients taking 81 mg of Aspirin will be allowed to enroll with close observation * History of gastric or duodenal ulcers or untreated hyperacidity syndromes. Patients on stable doses (2 months of therapy) of GERD medication allowed. * Patients who are currently taking Curcumin and are unwilling to stop or plan to take Curcumin during the study * Patients with a history of gallbladder problems or gallstones or biliary obstruction, unless patient had cholecystectomy