A relatively frequent genetic variant turns out to provide significant protection against Alzheimer’s disease and can delay the onset of the disease by as much as four years. That is the finding of research done by Judes Poirier, PhD, C.Q., and colleagues at the Douglas Mental Health Institute and McGill University in Montréal. The discovery opens new avenues for treatment against this devastating disease. Dr. presented the study at the annual Alzheimer’s Association International Conference in Copenhagen in July 2014.