A concerning trend is emerging among young people relying heavily on digital devices like smartphones. This phenomenon, often called “digital dementia,” is characterized by declining memory, calculation abilities, and concentration. The issue has become so prevalent that a new term, “youngzheimer,” has been coined. Experts caution that this cognitive impairment could accelerate the onset of dementia.
Medical professionals highlighted that while dementia is commonly associated with aging, younger generations are not immune. A recent study in South Korea reveals that many individuals in their 20s and 30s struggle to recall essential appointments or phone numbers without smartphones.
According to the 2022 Internet Usage Survey conducted by the South Korean Ministry of Science and ICT and the Korea National Information Society Agency, South Korean mobile and internet users spend an average of 22 hours per week on their phones, with a minimum daily time spent on their phones of 3 hours.
Dr. Ryu Chang Hwan, a neurologist at H+ Yangji Hospital, explains that when smartphones take over remembering important information like contacts and birthdays, the brain’s memory function weakens, leading to dementia-like symptoms. He adds that stress from personal relationships and work can also decline memory.
An Idle Brain Deteriorates: The Dangers of Over-Reliance On Digital Devices
Neuroscientists emphasize that our brains develop through use and atrophy when inactive. The hippocampus, crucial for memory formation, converts short-term memories into long-term ones through repeated experiences.
However, when we outsource information storage to digital devices, we reduce the amount of data converted to long-term memory. This can lead to brain atrophy and dementia-like symptoms, such as quickly forgetting stored information, difficulty memorizing more than three phone numbers, or struggling with simple calculations.
Many young people pride themselves on their ability to multitask, but this habit may increase the risk of dementia. Contrary to popular belief, multitasking can impair short-term memory and attention rather than enhance brain function.
Stress is another significant factor. Students preparing for exams and working professionals often experience stress and depression, which can diminish memory and concentration. Excessive alcohol consumption also plays a role, as it not only impairs brain function but frequent blackouts from heavy drinking can lead to cognitive decline and increase the risk of future dementia.
Prolonged Digital Dementia Can Evolve Into Early-Onset Dementia
If left unchecked, digital dementia can exacerbate memory decline and cognitive dysfunction, potentially leading to early-onset dementia. Prevention is crucial. Experts recommend reducing unnecessary digital device usage and cultivating habits to organize and remember information independently.
Implementing “digital detox” practices, such as setting limits on device usage, is advisable. Avoid multitasking and focus on one task at a time. Adjusting lifestyle habits, like taking notes and reading regularly, is also necessary.
Dr. Moon In Soo, head of the Brain and Nerve Center at Daedong Hospital, warns that although digital dementia is a social phenomenon, if it persists, certain brain areas may not develop properly, negatively impacting overall cognitive function.
Healthy habits like getting enough sleep, rest, and exercise can boost brain function. Engaging in face-to-face social activities during leisure time is important rather than relying solely on social media.
Brain-healthy foods such as fruits, vegetables, nuts, blue-backed fish, and omega-3 supplements can help prevent brain aging. Adequate sleep, rest, and exercise are essential for optimal brain function.
Dr. Ryu recommends developing a habit of writing things down in a notebook instead of relying on smartphones. Brain-stimulating hobbies like reading, playing musical instruments, keeping a diary, or playing chess and Go can enhance memory. He advises seeking medical examination if you frequently forget things or take a long time to recall information.
Dr. Moon emphasizes the importance of sleep for brain health. He recommends avoiding smartphone use two hours before bedtime, as the light and electromagnetic waves can disrupt deep sleep, which is crucial for consolidating the day’s experiences into long-term memories.