Scientists say they've proved mother knows best.
Dr. Paul Talalay of Johns Hopkins University School of Medicine said in a paper published today that studies in his lab show broccoli is rich in sulforaphane, a chemical that works as a powerful anti-cancer compound in laboratory mice. Studies have shown that a diet rich in cruciferous vegetables such as broccoli, Brussels sprouts, cabbage and cauliflower, can lower the risk of cancer of the bowel, stomach and breast. How those vegetables caused the effect wasn't clear. Now, Dr. Talalay said, it appears that at least one anti-cancer ingredient in the vegetables is sulforaphane. It works by causing cells to expel cancer-causing toxins.