This volume contains the proceedings of the 14th Colloque Médecine et Recherche of the Fondation Ipsen pour la Recherche Thérapeutique devoted to Alzheimer's Disease and dedicated to the epidemiological study of this dementia, a very important issue because the incidence and prevalence of Alzheimer's Disease rise exponentially with age. Epidemiological findings not only confirm dementia as a major challenge for the coming years but also contribute defining risk factors, predicting and may be preventing this disease.