evidence: The research on fruits and cancer isn’t perfect. There aren’t many studies, and the results are often inconsistent. No food, and certainly no one fruit, can prevent or fight cancer. [...] Fruit provides nutrients that you need during cancer treatment. Some fruits may also help ease discomfort. Experts recommend these, depending on how you feel: [...] Another study found that eating white vegetables and fruits, like apples, pears, mushrooms, and onions, may help protect against colorectal cancer. (Apples and pears are considered white because of their flesh.)