The effect on mortality of socially significant events is examined using birth date as the criterion date for a large sample from official state mortality records for Ohio. The sample consisted of all deaths from natural causes for 1979-1981. "The findings show that there is a greater tendency for persons to die within thirty days after the date of birth than before. More specifically, there was a statistically significant pattern of increased mortality for those who were never married and for ill-defined causes of death. A theoretical foundation and a brief interpretation of these findings is offered."