Depression-induced anorexia often has no obvious symptoms in the early stages, often due to excessive dieting due to self-consciousness of being too fat or social pressure. As the disease progresses, it can manifest itself as symptoms such as too little food, digestive symptoms, insomnia or drowsiness, depressed mood, and abnormal function of other organs: 1. Too little food: usually depressed anorexics have an abnormal amount of food, less than the norm, and may have varying degrees of less food, picky eating or food avoidance. This is usually accompanied by symptoms of malnutrition such as continuous weight loss and pallor; 2. Gastrointestinal symptoms: vomiting, indigestion after forced eating, or nausea without a cause and persistent constipation occur in the absence of gastrointestinal diseases; 3. Insomnia or drowsiness: Patients with anorexia nervosa usually have sleep disorders, manifesting as waking up 2-3 hours earlier than usual and having difficulty sleeping after waking up. A small number of depressed patients will show drowsiness, excessive sleep; 4, depressed mood: often persistent and obvious depressed mood, accompanied by low self-esteem and feelings of hopelessness and helplessness, anxiety, irritability, etc.. Even if they are already very thin, they will feel obese, and anorexia will increase, leading to a vicious cycle; 5. Abnormalities in the function of other organs: persistent depression leads to neurological dysfunction, insufficient nutritional intake leads to abnormal hormone levels, etc. Women may show reduced menstruation or amenorrhea or even infertility, and both men and women may show symptoms such as decreased libido and loss of axillary hair.