Alzheimer's disease is a progressive neurodegenerative disorder that primarily affects memory, thinking, and behavior. It is the most common cause of dementia in older adults and is characterized by the accumulation of abnormal proteins in the brain, leading to the death of brain cells and deterioration of cognitive function. Research in the field of Alzheimer's disease focuses on understanding the underlying causes of the disease, developing effective treatments to slow its progression, and ultimately finding a cure. This research involves studying the genetics, biomarkers, and pathology of the disease, as well as exploring potential therapies such as medications, lifestyle interventions, and brain stimulation techniques. Scientists are also investigating risk factors for Alzheimer's, such as age, genetics, and lifestyle factors, in order to develop strategies for prevention and early detection.