For lung cancer, it is appropriate to eat some green, natural, seasonal fruits. Generally, there are not too many fruits that cannot be eaten; there are no strict prohibitions against any particular fruit. You can eat apples, pears, bananas, oranges, watermelons, cantaloupes, and any such naturally green fruits, especially if they are unpolluted and in season. Therefore, generally speaking, there are not many fruits that people with lung cancer cannot eat. However, one should consume fruit in moderation. For instance, lychees are now in season, but as lychees are considered warm and heat-inducing, it is advisable to eat them in moderation.