This dissertation explores connections between homelessness, housing, and health. Drawing on a mixed methods two-phase design presented in a series of three separate articles, this dissertation demonstrates the changes experienced by formerly homeless individuals when they transition into supported housing. Health and stress comparisons are made between currently and formerly homeless individuals, as are changes experienced by formerly homeless individuals during their first six months of housing tenure. The findings indicate that individuals who transition from homelessness into housing appear to experience improvements in their health and wellbeing. But housing does not appear solely responsible for these positive changes. Rather, the findings demonstrate the importance of formal and informal social relationships during this status transition. Caseworkers and physicians operate as formal supporters, and provide important services to help stabilize and minimize the stresses that accompany this status transition. Informal social relationships developed away from social service agencies and shelters aid in developing identities apart from homelessness.