Patients with prostate cancer can eat mutton. There is a folk belief about certain foods being "heaty", which refers to foods like mutton, beef, roosters, and bamboo shoots, often labeled as such and believed to be unsuitable for consumption. However, this belief is unscientific. From a medical perspective, patients with prostate cancer should primarily avoid junk food, such as barbecued items, pickled and smoked products, and especially oily and high-fat foods. Reducing the intake of these foods is recommended. Other than that, all other foods can be eaten, as long as there is a balanced nutrition and a good mix of meat, eggs, vegetables, and fruits. The idea of the so-called "heaty" foods is not scientifically based.