Analysis of cause-specific death rates among 750 elderly psychiatric inpatients revealed a markedly increased risk of death from pneumonia and a lesser but still substantial risk of death from cardiovascular disorders during the first year of hospitalization. Although the risks of cardiovascular death are considerably less among longer-stay patients, the pneumonia risks remain high. This suggests differing preventive strategies. To help prevent cardiovascular deaths, more attention should be paid to avoiding transfer trauma and its attendant stress. To help prevent pneumonia deaths, high priority should be given to an aggressive program of immunization, adequate nutrition, reduction of hospital overcrowding, and recognition of early pneumonia symptoms.