>>Resveratrol has been shown to reduce tumor incidence in animals by affecting one or more stages of cancer development. It has been shown to inhibit growth of many types of cancer cells in culture (see Question 2).
>>Evidence from animal studies suggests this anti-inflammatory compound may be an effective chemopreventive agent in three stages of the cancer process: Initiation, promotion, and progression (see Question 3).
There is a long standing body of research indicating that resveratrol and other polyphenols can help maintain healthy cellular activity, discouraging certain types of cancer.