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What not to eat: Animal fats

While researchers are still trying to determine which foods have the most cancer- preventing benefits, we do know what not to eat if you want to protect yourself, says Cheryl Forberg, RD, author of Positively Ageless:

Animal fats: Meat, cheese, and butter can be rich in saturated fat, which has been linked to obesity—a big cancer predictor. Opt for leaner protein sources, such as fish, low-fat dairy, and those good-for-you beans.

Next: What not to eat: Processed meats