Patients with gallbladder cancer can eat dragon fruit. Dragon fruit is a type of fruit that is rich in vitamins and trace elements, which can be beneficial for recovery. It can help reduce inflammatory irritation and prevent the condition from worsening. Additionally, the diet for patients with gallbladder cancer should be light, primarily consisting of fresh vegetables and fruits. However, spicy and irritating foods should be avoided to reduce inflammation. It is also appropriate to supplement the diet with protein-rich foods, such as eggs, lean meats, and fish, to replenish the proteins needed by the body, enhance the patient's resistance, and facilitate recovery from the illness.