Diets full of black raspberries and raw vegetables, particularly broccoli sprouts, could prevent or slow the growth of some common forms of cancer.

Black raspberries may protect against cancer of the esophagus by reducing stress in patients. Plant-based diets and increased fruit consumption are associated with decreased risks of cancer, said Laura A. Kresty, Ph.D., assistant professor at Ohio State University.

Researchers have also found that broccoli sprouts, a rich source of isothiocyanates, a well-known class of cancer prevention agent, could play a direct role in preventing bladder cancer.

According to Yuesheng Zhang, M.D., Ph.D, professor of oncology at Roswell Park Cancer Institute, the freeze-dried aqueous extract of broccoli sprouts significantly inhibit bladder cancer development.

Researchers from Roswell Park Cancer Institute report that three or more servings a month of raw vegetables like broccoli, cabbage and cauliflower, may reduce bladder cancer risk by approximately 40 percent.

These findings were presented at the American Association for Cancer Research's Sixth Annual International Conference on Frontiers in Cancer Prevention.