Cancer-friendly foods are those rich in nutrients that support the immune system and help reduce inflammation. These include fruits and vegetables high in antioxidants like berries, leafy greens, and cruciferous vegetables (broccoli, cauliflower). Whole grains, lean proteins like fish and legumes, and healthy fats from sources like nuts and olive oil are also recommended. These foods help provide essential vitamins, minerals, and fiber that may aid in reducing cancer risk, managing side effects of treatment, and promoting overall health. Avoiding processed foods and sugars is often emphasized in cancer-friendly diets.