Bilingual? Then your chances of developing Alzheimer’s disease may be delayed by up to five years, according to a new study. In the study of 648 Indian adults, those who spoke two languages developed dementia an average of 4, 5 years later than those who spoke only one language, even among those who are illiterate. This includes not only Alzheimer’s disease, but also vascular dementia and frontotemporal dementia. Speaking more than two languages, however, was not associated with increased benefit. Here are some tips on how to Debug Your Brain and Upgrade Your Memory Fast.