I was wondering what are the foods that help prevent cancer?

We wonder, too: Truth be told, sophia, the more you read about this in the genuine, peer-reviewed scientific literature, the more confused you'll become. It's impossible to separate people's food choices from other lifestyle considerations and risks, and different studies are wildly contradictory. For now, follow a sensible diet -- easy on the grease, salt, and sugar -- and keep up surveillance against cancer.