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Pune, September 5, 2024 — In today’s digital age, many of us spend countless hours glued to screens—whether for work, entertainment, or social connection. However, experts are raising alarms about the potential cognitive toll of this lifestyle, warning that the combination of excessive screen time and physical inactivity could lead to what is now being termed “digital dementia.”
“Digital dementia” refers to memory issues and cognitive decline associated with over-reliance on digital devices such as smartphones, computers, and tablets. This condition, while relatively new in its terminology, has become increasingly prevalent, particularly among younger adults who lead sedentary lifestyles.
“Long periods of screen time can adversely affect the brain’s cognitive functions,” stated Dr. Vinayak Kshirsagar, Senior Laparoscopic Surgeon at DPU Super Speciality Hospital, Pimpri, Pune. “This issue stems largely from a decreased attention span and prolonged screen exposure, often coupled with poor posture. These factors can lead to a range of health problems, including obesity, body aches, spine issues, and back pain.”
Dementia is a broad term that encompasses a variety of cognitive impairments, significantly impacting an individual’s daily life. Traditionally more common among older adults, recent studies have shown that a sedentary lifestyle—characterized by prolonged inactivity—can increase the risk of dementia, even in younger populations.
A study conducted in 2022 revealed a direct correlation between sedentary activities, such as watching television or using computers, and an increased risk of dementia. Notably, the study found that individuals who spent more than four hours a day on screens were more likely to develop vascular dementia and Alzheimer’s disease, regardless of their overall physical activity levels.
“The symptoms of digital dementia include short-term memory loss, difficulty in multitasking, reduced attention span, and a decline in learning capacity,” explained Dr. Pawan Ojha, Director of Neurology at Fortis Hiranandani Hospital, Vashi. “These issues are exacerbated by a sedentary lifestyle, where individuals remain inactive for most of the day, tied to their desks and screens.”
Prolonged periods of inactivity are becoming increasingly common in modern society, contributing to a range of health issues, including obesity, cardiovascular disease, diabetes, and now, dementia.
“Physical inactivity can lead to structural changes in the brain, inflammation, and reduced blood flow,” said Dr. (Lt Gen) CS Narayanan, VSM, Chairman of the Institute of Neurosciences at Manipal Hospital Dwarka, New Delhi. “These changes, coupled with continuous digital processing, mean that our memory isn’t being adequately trained, leading to increased anxiety, stress, and potential behavioral changes.”
Moreover, conditions like obesity and diabetes, which are exacerbated by inactivity, are known risk factors for dementia, further compounding the risks associated with digital overuse.
To mitigate these risks, experts recommend incorporating short, frequent breaks from sitting throughout the day. Simple activities like standing up, stretching, or taking a brief walk can significantly reduce sedentary time and promote better overall health.
“Regular exercise, particularly aerobic activity, can improve cardiovascular health, reduce inflammation, and enhance neuroplasticity—the brain’s ability to reorganize itself by forming new neural connections,” Dr. Narayanan noted. “These benefits are crucial for maintaining cognitive function and reducing the risk of dementia.”
In addition to promoting physical activity, experts stress the importance of moderate screen use. A balanced approach to digital technology, coupled with a healthy lifestyle, is vital for maintaining cognitive health and preventing conditions like digital dementia.
As our reliance on digital devices continues to grow, understanding the potential cognitive risks and taking proactive steps to mitigate them is essential for safeguarding our brain health in the long term.
