The study does not prove a cause-and-effect relationship between eating nuts and having a lower risk of colon cancer, the researchers said. However, the researchers hypothesized that some of the compounds, including fiber and antioxidants, found in nuts may help reduce a person's risk of colon cancer. [Top 10 Cancer-Fighting Foods]
Shin noted that a limitation of the study is that participants were asked to recall their own nut intake, and it's possible that they may have made mistakes.