Benefits of Being Bilingual: Delay Alzheimer's?

I've heard that learning a second language can help delay the onset of Alzheimer's disease. Is this true? Answer From Jonathan Graff-Radford, M.D. Possibly. Studies on the connection between bilingualism and a lower risk of Alzheimer's disease have had conflicting results. Some studies have shown that if you know two or more languages—and you have […]