When a patient with cerebral thrombosis eats less and poops more, it is considered to be caused by autonomic dysfunction, gastrointestinal dysfunction, and so on. It may also be caused by other diseases, such as colitis. 1. Autonomic dysfunction: Patients with cerebral thrombosis may suffer from autonomic dysfunction due to emotional depression and mental stress after the disease, which may lead to symptoms such as decreased appetite and abnormal bowel movement. 2. Gastrointestinal dysfunction: Cerebral thrombosis will cause ischemia and hypoxia of brain tissues, which will often affect the nerve function of organs and may lead to gastrointestinal nerve dysfunction, which will result in some abnormal symptoms, such as reduced diet, loss of appetite, frequent defecation and so on. 3. Colitis: If the immunity of patients with cerebral thrombosis is low and the intestinal flora is disordered, it will cause colitis, and the number of bowel movements can be increased. Patients with cerebral thrombosis who eat less and have more bowel movements may also have other causes, and they should consult the doctor in time for examination and treatment according to the specific situation.