Pomegranate juice stops the growth of prostate cancer in laboratory cultures and in living mice, and may do the same thing in humans, researchers report.It’s another plus for the Mediterranean fruit, which was recently reported by Italian researchers to have protective effects against heart disease in mice, preventing the build-up of fatty deposits along their artery walls.Still, it’s a long way from these findings to proof that pomegranate juice could be used to treat or prevent human prostate cancer, said Hasan Mukhtar, a professor of cancer research at the University of Wisconsin and lead author of a study in this week’s issue of the Proceedings of the National Academy of Sciences.