The most common type of dementia, Alzheimer's disease is characterized by a steadily declining neurological state. There are two primary categories of neuropathological alterations in this illness. The first category consists of positive lesions, which are identified in the brains of the afflicted individuals by the build-up of neurofibrillary tangles, amyloid plaques, dystrophic neurites, neuropil threads, and other aberrant deposits. The existence of senile plaques, and extracellular deposits of beta-amyloid protein (Aβ), is one of the main reasons for these alterations. The accumulation of Aβ plays a major role in neurotoxicity, which has several detrimental impacts on the health of neurons.