The ongoing demographic shift towards an older population calls for a corresponding shift to a proactive approach, aiming for health and well-being in old age. This dissertation addresses the need for increased knowledge about health in the context of aging at home. It explores the roles of relationships, home, health, and well-being while examining the various factors influencing health. The disseration also explores how key stakeholders in home care organizations percive a good life for older persons. From a nursing perspective, the disseration explores pathways of change and experiences related to health, guided by the caritative caring theory, which underscores health as wholeness and holiness. By thoroughly examining self-rated health, relationships, and the experiences of older persons receiving home support, along with key stakeholders' perceptions, the dissertation aims to provide valuable insights for nursing practices and the promotion of health in later life.

This dissertation aims to explore health in later life, specifically concentrating on widowed women living alone with extensive home care needs. This exploration encompasses both the perspective of older widows and that of key stakeholders. For a comprehensive understanding health, the disseration also study self-rated health among older persons over a 20-year period, exploring its associations to health and well-being factors, including survival. Additionally, the dissertation explores the shared relationship between older women and nurses.

This dissertation comprises one quantitative and three qualitative studies, all centred around older persons aged 80 years and older. Paper I is a quantitative, longitudinal study investigating changes in Self-Rated Health (SRH) across the aging spectrum. The study included 1595 participants initially (aged 59-79) and 541 participants at follow-up (age 80-96). Most participants rated their health as "Quite good" (54.5%) at baseline. Over the study period, 42.6% had stable SRH, 40.6% had declined, and 16.8% had improved. Changes in SRH were at follow-up significantly associated with age, pain, nutrition, cognition, walking aid use, self-paced gait speed, lower extremity strength, independence in activities of daily living, weekly physical exercise, outdoor activity, participation in organized activities, visiting others, morale, and depressive symptoms. SRH at baseline was significantly associated with survival (p<0.05). Paper II is a qualitative study about the concept of a good life for single-living older women with extensive care needs. This involved individual interviews with 11 participants aged 82-95, analysed through reflexive thematic analysis. Paper III is a qualitative description of key stakeholders' perceptions regarding a good life for the oldest old persons living at home with extensive care needs. The study utilized qualitative focus groups with 28 participants aged 31-69 (1 man, 27 women), analysed through qualitative content analysis. Paper IV is a qualitative study that aim to explore the meaning of relationship between older women and registered nurses in home care. The research employed qualitative methods, including focus groups and individual interviews, with 11 older women (aged 82-95) and 5 registered nurses (aged 35-47), analysed using qualitative content analysis. 

In conclusion, health in later life is not merely about avoiding a decline in health; rather, it involves integrating existing aspects into an ever-changing situation. However, challenges such as living alone, experiencing depressive symptoms, and coping with illness and/or functional disability can pose threats, risking overall health and survival. In contrast, for those living with disabilities and illnesses with extensive care needs, the significance of daily life becomes paramount. Simultaneously, the relationship between older women and registered nurse emerges as a recurring connection with the potential not only to enhance daily life but also to serve as a consistent and supportive presence in the home.