“Anti cancer foods” are usually plant foods that contain phytochemicals (mentioned above). Also referred to as phytonutrients, these chemicals are compounds found in plants that can help prevent a number of chronic diseases, including cancer [2]. In order to decrease your risk of developing cancer, doctors, dietitians, nutritionists, and other health care practitioners recommend that you eat a variety of phytochemical-rich fruits and vegetables on a regular basis.
8 Anti Cancer Foods to Help Lower Cancer Risk

Wohlford says that the best way to get the most protection from cancer is to eat a variety of fruits and vegetables, and the easiest way to do this is to “eat the rainbow”- that is, choose a wide variety of colors when you’re at the grocery store. “Keep in mind that there are more than 4,000 phytochemicals that have been discovered and researched,” she says. “There’s not any one super-food that contains all of them. They all offer different functions and benefits.” [2] The following foods are known as cancer-fighting powerhouses. This is by no means an exhaustive list, but including them in your diet is a good start to lowering your cancer risk.