In the past decades, the »graying« of the population has emerged as a world-wide phenomenon, leading to an increased interest in research on aging. Many population-based studies have been initiated in several countries, such as the Kungsholmen Project in Stockholm, Sweden. These studies have shown that older adults can be recruited to participate in intensive physiological and clinical evaluations, and that longitudinal surveys are well accepted by the elderly. Comorbidity and physical and mental functioning have emerged as important variables for describing health status and identifying risk factors. Dementia arose as one of the most common diseases in the very old, as dementia prevalence nearly doubles every fifth year. Some risk factors for Alzheimer’s disease have been identified and interesting working hypotheses have been suggested. The natural history of the dementias have been sufficiently outlined for allocating medical and social resources, and for counseling patients and relatives.

Undocumented migrants in Sweden have no regulated access to health care, but as legislation forbids anyone to be denied “immediate” care at their own expense when in need, this applies also to them. In lack of specific national regulations, local policies on the issue have been formed. This study, based on interviews with civil servants on the local levels and representatives of NGO clinics as well as the study of relevant national legislation and local policies, concludes that the local policies formed may be categorized into three groups: regulations that merely clarify the implications of current national legislation, regulations that incorporates the group “undocumented migrants” in “asylum seekers” and equates their entitlements, and finally, regulations that widen undocumented migrants’ access to health care from ”immediate” care to also include ”immediately necessary” care. These ambiguities put a heavy responsibility on the individual practitioner, and clearer, well-communicated regulations would help solve this situation.