JMIR Publications

ABSTRACT

Background:

Given that cognitive decline lacks effective treatment options and has severe implications for healthy aging, Internet use may achieve non-pharmacological relief of cognitive decline through cognitive stimulation and social engagement.

Objective:

This study aimed to investigate the relationship between the variety, frequency and type of Internet use and cognitive decline from two theoretical perspectives: the cognitive reserve theory and the stress hypothesis.

Methods:

Data were obtained from a total of 10,532 survey samples from the China Family Panel Studies (CFPS) databases wave 3 (2014) and wave 5 (2018). Cognitive function was measured using vocabulary tests, and Internet use was categorized into five aspects: study, work, social, entertainment, and business. Associations between diversity, frequency, and type of Internet use and cognitive decline were estimated by controlling for demographic variables and health status risk factors through fixed-effects models.

Results:

Using the Internet at least once a week for study, work, and entertainment purposes, and for social purposes less than once a week were all associated with better cognitive function. Using the Internet less than once a week for business activity was associated with poorer cognitive function. Using more than one type of Internet at least once a week was associated with better cognitive function.

Conclusions:

This study shows that breadth and depth of Internet use is positively associated with cognitive function, and that different types of Internet use have different roles in cognitive decline. The importance of the Internet as a non-pharmacological intervention pathway for cognitive decline is emphasized. It is instructive for the development of relevant policies. Future research could explore specific mechanisms of influence.