The term ‘digital dementia’ refers to memory problems and cognitive decline caused by over-dependence on digital devices such as smartphones, computers, etc. With the vast increase in the use of technology in our daily lives, it is important to understand the potential damage it can cause to our mental health. Therefore, we need to raise awareness about the potential problems that come with over-dependence on gadgets and it is imperative to understand digital dementia.
A 2022 study examined the association between overall dementia risk and sedentary activities such as watching television and using a computer. Regardless of physical activity level, the data showed that more time spent on cognitively inactive activities such as watching television increased the risk of dementia. However, passive cognitively active activities such as using a computer were associated with a lower risk of dementia.
Another study showed that people who spent more than four hours a day in front of screens had a higher risk of developing vascular dementia, Alzheimer’s disease and dementia of all types. In an interview with HT Lifestyle, Dr Pawan Ojha, Director of Neurology at Fortis Hiranandani Hospital, Vashi, said, “Increased screen time per day has also been associated with anatomical changes in certain brain regions. The symptoms of digital dementia are similar to those of dementia and include short-term memory loss, trouble recalling words and difficulty multitasking.”
He explained: “Reductions in memory, attention span and learning ability can result from sustained multitasking and rapid information processing. This can impact behavior by increasing tension and anxiety. This is because excessive screen time can crowd out other important activities that support cognitive and social development. In addition, the blue light emitted by screens can disrupt sleep cycles, which can impact memory consolidation and cognitive function. Constantly switching between things when using a device can make it harder to concentrate and focus.”
Given that digital sources represent a constant flow of information that can overload the brain, Dr. Pawan Ojha warned that moderation is essential in the fight against digital dementia. Therefore, the following measures can help you avoid screen time and counteract the harmful effects of excessive technology use:
1. Limit phone notifications:
Reducing the number of notifications you receive can help you avoid spending all your time in front of a screen or on the phone. If a particular notification isn’t urgent, consider muting it or eliminating it altogether.
2. Set a time limit for passive media:
Depending on how you spend your time, this may look different. There are apps that allow you to set a time limit on excessive scrolling.
Dr. Pawan Ojha advised, “As a parent, if you’re looking for strategies to reduce your child’s screen time, start by talking about the value of moderation. Describe your efforts to reduce the amount of time you spend in front of the screen, and practice keeping an eye on it and making adjustments as a family. Even the smallest changes can have a significant positive impact on your health, whether you’re looking for methods to reduce your personal screen time or you’re looking to make changes with your family.”
There is no solid evidence in the scientific literature to support the notion that excessive screen time causes “digital dementia,” although it may have adverse effects on cognitive function. Careful use of digital technologies and a balanced lifestyle are crucial for overall cognitive health.
