Tea continues its ascension toward nutritional sainthood. The latest news: Green Tea may slow prostate cancer progression, according to research from the Louisiana State University Health Sciences Center. In the study, prostate-cancer patients were given daily doses of a drug made mostly from the catechins in green tea. After about five weeks, the men had lower levels of molecules that advance the disease. The catechins may block these harmful molecules from being transcribed by your DNA, say the scientists. More research may determine if drinking the tea has similar effects.