1 in 3 elderly Americans die with Alzheimers, or another form of dementia, but a recent study found that are common vitamin supplement may help ward off the debilitating disease. Samuel Zahinoor Ismail, MD FRCPC, Professor of Psychiatry, Neurology, Epidemiology, and Pathology at the Hotchkiss Brain Institute and O'Brien Institute for Public Health at the University of Calgary, shares his fascinating findings.