The length of time a person with psychosis can live cannot be generalized and needs to be analyzed on a case-by-case basis. Most psychiatric disorders refer to heavy mental illnesses, such as schizophrenia or bipolar disorder. The length of life depends on a variety of factors. In the case of schizophrenia patients, for example, a small number of patients with first-episode schizophrenia achieve recovery if they undergo active and systematic treatment. However, most patients with schizophrenia require long-term or even lifelong antipsychotic medication, and the length of life depends on the presence of other serious physical illnesses and the degree of damage to the patient’s body from long-term drug use. In general, patients with schizophrenia have a 15-20 year reduced life expectancy compared to the general population. Patients with mental illness are advised to follow medical advice on the use of medications and not to stop or reduce the dosage on their own, as this may affect treatment, and regular follow-ups are required.