while eating a healthy diet is important for overall health and can help reduce the risk of some types of cancer, it is not possible to estimate the exact percentage of cancer that could be eliminated by eating a healthy diet. Many factors, including genetics, lifestyle choices, and environmental exposures, can contribute to the development of cancer. However, the American Cancer Society recommends eating a diet that is high in fruits, vegetables, and whole grains, and low in processed and red meats, to help reduce the risk of cancer.