Key points from article :
Contrary to fears that screen time could damage brain health in later life, a large-scale review has found that older adults who use digital devices like smartphones and computers experience slower cognitive decline. The study, led by Dr. Jared Benge of UT Health Austin and Dr. Michael Scullin of Baylor University, was published in Nature Human Behaviour and analysed data from over 400,000 people aged 50 and older.
The researchers reviewed 57 studies and found no evidence for the so-called “digital dementia” theory—the idea that long-term technology use harms cognitive function. Instead, they discovered that regular use of digital tools such as smartphones and the internet was linked to better mental performance. This suggests that engaging with technology could support brain health in ageing populations.
While it remains unclear whether digital device use causes improved cognition or simply reflects it, the authors believe it may be a two-way relationship. They suggest that complexity, connection, and compensation are key benefits: digital tools can stimulate thinking, foster social ties, and help users manage daily tasks despite age-related challenges.
Experts say the findings are a turning point in the conversation around ageing and technology. Instead of fearing screens, the study encourages us to think more carefully about how digital devices are used—not just how often. When used actively and socially, they may offer real cognitive benefits for older adults.
