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Meta-Analysis Shows Using Gadgets May Benefit Older Brains - Video

Published On 2025-05-31T08:00:31+05:30  |  Updated On 31 May 2025 8:00 AM IST
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Overview

In an age dominated by smartphones, social media, and artificial intelligence, a new study published in Nature Human Behaviour brings an encouraging perspective: technology might actually help older adults stay mentally sharp. Conducted by neuropsychologists Jared Benge from the University of Texas and Michael Scullin from Baylor University, the study challenges long-standing fears about “digital dementia,” instead suggesting that digital engagement may reduce the risk of cognitive decline.

To uncover the impact of technology on the aging brain, the researchers conducted a meta-analysis, reviewing 57 studies that involved data from more than 411,000 adults over the age of 50. These studies tracked the relationship between technology use and cognitive performance, using cognitive tests and dementia diagnoses to measure decline.

The key findings showed that using computers, smartphones, and the internet may help people over 50 experience less cognitive decline. The overall odds ratio was 0.42, meaning those who used technology more frequently had a 58% reduced risk of cognitive decline.

This protective effect was stronger than some commonly recognized factors like physical activity (35% risk reduction) and managing blood pressure (13% risk reduction). However, researchers caution that the causal link is not yet proven, especially since participants from low- and middle-income countries were underrepresented. Also, the study didn’t include the effects of brain training games or all forms of technology usage.

Reference: Benge, J.F., Scullin, M.K. A meta-analysis of technology use and cognitive aging. Nat Hum Behav (2025). https://doi.org/10.1038/s41562-025-02159-9

Speakers

Dr. Bhumika Maikhuri

BDS, MDS

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