Alzheimer's disease is a progressive neurodegenerative disorder that affects the brain, leading to memory loss, cognitive decline, and eventually, the inability to carry out daily tasks. It is the most common form of dementia among older adults and is characterized by the accumulation of abnormal proteins in the brain that cause nerve cell damage and cell death. Research in Alzheimer's disease focuses on understanding the underlying causes of the disease, developing effective treatments to slow or halt its progression, and improving diagnosis and care for individuals affected by the condition. This includes studying genetic and environmental risk factors, investigating potential biomarkers for early detection, and exploring therapeutic interventions such as medications, lifestyle changes, and cognitive training programs. Overall, the goal of research in Alzheimer's disease is to ultimately find a cure for this devastating condition and improve the quality of life for those living with the disease and their caregivers.