Milk
Drinking two cups or more each day reduces the risk of developing colon cancer by 22 percent, according to a new review of 27 studies. Stick to 1 percent or skim-these varieties seem to confer the greatest benefits.
Fish
In a recent study of more than 1,800 American adults, those who ate plenty of food with high levels of omega-3 fatty acids cut their risk by as much as 39 percent. Having two meals of fatty fish (such as tuna, salmon, or sardines) a week does the trick, the researchers say. That’s the same amount shown to help keep your heart healthy.
Soy
For every five grams of soy eaten daily (about one eighth cup of tofu), your chance of developing colorectal cancer drops by 8 percent, according to a recent study of more than 68,000 Chinese women. Other research shows that natural fat molecules in soy called sphingadienes may be toxic to cancer cells in the colon.