evidence: Eating a variety of fruits during and after cancer treatment can be beneficial. Bananas, strawberries, and apples are among some of the fruits that can help relieve symptoms. [...] Eating nutritious foods, including fruits, helps supply your body with vitamins, minerals, and antioxidants throughout your cancer treatment. [...] Eating certain fruits can significantly affect your health, especially during cancer treatment. Fruits and vegetables are important to keep the brain functioning as much as possible.