Our objective is to quantify the mortality from AIDS, narcotic related deaths, and traffic accidents among those between 15 and 39 years of age, in the Community of Madrid, 1990-1991. Data provided by the Regional Register of AIDS, Forensic Institute of Madrid, local police teams and the Traffic Directorate General have been used. Mortality from traffic accidents ranked first as a cause of death, followed by narcotic-related deaths and AIDS, both for men and women.