Scientists can learn a tremendous amount about dementia and the brain from studying healthy people as well as those with memory disorders. Therefore ADRC conducts several types of clinical research for healthy elders and those with memory disorders. ADRC Clinical trials evaluate the safety and effectiveness of new medications in treating or preventing Alzheimer's disease. Other studies examine genetic factors and biological markers in Alzheimer's disease, as well as factors that might either increase or decrease the risk of getting Alzheimer's disease.