Immunosenescence and Alzheimer’s Disease

Alzheimer’s disease (AD) is the most frequent cause of dementia due to neurodegeneration. It is stated that the most important risk factor for the late onset AD development is age. AD develops during decades and appears most of the time after 65 years of age. Even though its incidence is increasing with age but not all the centenarians are suffering from AD. The most important underlying age-related factor is immunosenescence/inflammaging. Indeed, aging is associated with immune changes which are thought to be the most prevalent cause of the age-related chronic inflammatory diseases. However, it is now postulated that the changes occurring with aging in the immune system may not be only detrimental but also adaptive. Therefore, in this review we will describe whether and how immunosenescence/inflammaging may contribute to the development of AD. We will also examine whether this can lead to novel treatment approaches different form the current.