Analysis of morbidity, mortality, and demographic data on Navajo people was undertaken to identify leading health problems in the Navajo area and to suggest intervention activities. Comparisons with total U.S. population were made to provide perspective. Data on Navajo mortality showed: a ratio of male to female deaths of 2:1, more than 50 percent of deaths occurred in persons 44 years old or younger, mortality rates exceeded U.S. rates for ages up to 45 years, median age of death was 42.3 (71.2 for the U.S.), most common cause of death was accidents (primarily auto accidents), and the Navajo postnatal death rate was more than twice that of the U.S. Inpatient morbidity data showed hospitalization was most often due to deliveries and complications of pregnancy; accidents, poison, violence; respiratory problems (60 percent from pneumonia); and infective/parasitic diseases. Most common causes of outpatient morbidity were respiratory illnesses, supplemental care, infective/parasitic diseases, accidents, poison, and violence. Statistics indicated the 0-4 years category at high risk for infectious diseases and identified alcoholism as an important morbidity factor. Data pointed to sanitation, housing, nutrition, and behavior as underlying causes for many conditions. Educational, environmental, and personal health care measures for reducing morbidity and mortality for some 20 diseases were outlined. (RS)