Impact of bilingualism on prevalence of dementia and MCI: A community study from India

Active bilingualism provides cognitive reserve/resilience against age‐related neurodegenerative conditions like MCI and dementia. Evidences suggest that bilingualism delay the onset of MCI and dementia by preserving cognitive functioning for a longer period of time. India has a linguistically diverse population where bilingualism is a norm and its effects on cognitive reserve are devoid of immigration, education and socioeconomic status. We conducted a door‐to‐doorcommunity‐based study to investigate the impact of bilingualism on the prevalence of dementia and MCI in healthy older monolingual and bilingual population. The study also examined the effect of bilingualism on cognitive performance.