A new analysis of data from over 400,000 older adults suggests that regularly using smartphones, computers, and other digital tools may actually help preserve mental sharpness as people age.
Researchers from Baylor University, in a study published in Nature Human Behaviour, found that older adults who engage with digital technology face a significantly lower risk of cognitive decline, as much as 58% lower in some analyses.
The results contradict long-standing concerns about so-called “digital dementia,” a term used to describe the fear that screen use might accelerate memory loss.
“You can flip on the news on just about any day and you’ll see people talking about how technologies are harming us,” said study co-author Dr. Michael Scullin. “But our findings show that digital tools can support brain health — particularly as we age.”
The study analyzed more than 130 previous investigations tracking older adults over time. While researchers caution this doesn’t prove smartphones prevent dementia outright, the evidence points to a strong connection between digital activity and slower cognitive decline.
One reason? Technology is challenging — especially for those who didn’t grow up with it. From learning how to navigate apps to troubleshooting technical glitches, these activities require mental effort. That kind of challenge, researchers say, may help keep the brain engaged and adaptable.
Another factor may be what experts call “digital scaffolding” — tools like phone reminders, calendars, and GPS apps that help people stay organized and independent even as memory or attention wanes. Maintaining daily routines and autonomy is a key goal in aging well, and these tools are proving useful in that effort.
Social connection also plays a role. Smartphones and tablets offer ways to stay in touch with family, friends, and communities — a factor long known to reduce dementia risk. “You can not only talk to [your family], you can see them. You can share pictures. You can exchange emails — and it’s all within a second,” Scullin said.
The latest data from Pew Research shows that 90% of American seniors are now online, and 91% own smartphones. That increased connectivity could be contributing to the encouraging results. AARP’s 2025 Tech Trends report echoes this shift, showing that tablets, smart TVs, and voice assistants are increasingly common among older adults.
Still, researchers caution against overuse or passive screen time. “Our findings are not a blanket endorsement of mindless scrolling,” said Dr. Jared Benge, a clinical neuropsychologist in Austin. Instead, he views the study as reassurance that moderate, engaged tech use can be part of a healthy lifestyle.
Experts agree that more research is needed — especially on how different types of tech use (like video chatting versus watching videos) affect brain health. But for now, the message is clear: engaging with digital tools may do more good than harm when it comes to aging minds.
As Scullin put it, “What used to feel like a frustrating learning curve may actually be mental exercise in disguise.”