Leading scientists in the field of dementia research met at “Vår Gård” in Saltsjöbaden, Stockholm, from 6-7 December to discuss “Updating Alzheimer’s disease diagnosis – implications for prevention and treatment.” The symposium was sponsored by the Journal of Internal Medicine and the Royal Swedish Academy of Sciences. It was organized by Professors Miia Kivipelto, Bengt Winblad, and Laura Fratiglioni. The goal was to discuss important issues related to the diagnosis, prevention, and treatment of Alzheimer’s disease. Symposium speakers and discussants will write a series of 7 review articles for the Journal of Internal Medicine.