Alzheimer’s is a neurodegenerative disease that features the accumulation of the beta-amyloid peptide and Tau protein in the brain, which are associated with deficits in the neuronal connections and with dementia. However, researchers have recently discovered a type of people that despite the accumulation of these molecules, they do not develop dementia: the NDAN patients (non-Demented with Alzheimer’s disease Neuropathology).