Patients with advanced lung cancer did not eat for several days, and one day they suddenly wanted to eat, but their physiological characteristics were still stable. What is the reason?

Hello, welcome to consult. Multiple metastases often occur in the late stage of lung cancer, and multiple organ dysfunction may occur. It is not surprising that there are various symptoms and signs. I haven't eaten for several days, and suddenly I want to eat. Although my vital signs are stable, it doesn't mean that my condition is improving. In the process of disease occurrence and development, sometimes there may be disease recurrence. It is also a comfort to satisfy the wishes of patients with advanced cancer.