Social Interaction and Dementia Prevention: Six-year follow-up study

Abstract

This six-year follow-up study was designed to analyse the relationship between social interaction and the prevention of dementia. All participants (aged 65 years and above) lived in farming communities near major urban centers in Japan. The contents of the questionnaire covered social interaction (using an index of social interaction constituting 18 items), health status, physical function, age, and gender. Residents who needed care and had disease at baseline survey were excluded from analysis. After the baseline survey, 35 participants among 593 were diagnosed as dementia within the six-year period. Results showed that: (1) baseline age was related to dementia; (2) greater social interaction was positively related to reduced dementia; (3) the multiple logistic regression analysis adjusted for baseline age, gender indicated that high frequency of newspaper reading, health motivation, life style motivation, and active approach were related to dementia prevention. These findings highlight the importance of social interaction in dementia prevention.