The study took advantage of the data collected as part of the Framingham Study to investigate the effect of widowhood on cardiovascular disease. The Framingham dataset has extensive clinical data related to cardiovascular disease, as well as to health behaviors. These longitudinal data provided the opportunity to prospectively characterize the health of widows prior to and following the loss of a spouse in much greater detail than previously possible. The analyses used a prospective design in which those men and women who had a spouse die during the course of the study (N=626) were compared to men and women who remained married (N=2044). These analyses also provided the opportunity to examine reasons for the beneficial effect found of remarriage. The study addressed the following questions: 1. Can the increased risk of mortality from cardiovascular disease often found following widowhood be explained by pre-widowhood health status? 2. Can increased mortality following widowhood be explained by changes in health behaviors related to cardiovascular disease risk. 3. What pre-widowhood risk factors place the widowed at greater risk for cardiovascular disease morbidity and/or mortality following the death of a spouse? 4. Can pre-widowhood risk factors or post-widowhood behavior change account for gender differences in mortality following widowhood?