Japan’s First “Smartphone Dementia” Clinic Opens in Gifu Prefecture to Address Memory Loss Linked to Excessive Smartphone Use

In a groundbreaking response to a growing public health concern, Japan has opened its first clinic dedicated to treating “smartphone dementia,” a term coined by Japanese medical professionals to describe memory and cognitive impairments associated with excessive smartphone use. The Okumura Memory Clinic, led by neurosurgeon Dr. Ayumu Okumura in Gifu Prefecture, is at the forefront of addressing this emerging condition, which mimics symptoms of early dementia in individuals as young as their 30s, 40s, and 50s. The clinic’s opening has sparked widespread discussion about the impact of digital overuse on brain health, with reports suggesting up to 10 million people in Japan may be at risk.

Understanding “Smartphone Dementia”
“Smartphone dementia” is not a formal medical diagnosis but a descriptive term used to highlight cognitive decline linked to prolonged and intensive smartphone use. Dr. Okumura, in an interview with Nikkei Style, explained that excessive digital device use overwhelms the brain’s prefrontal cortex, which is responsible for organizing information, memory, decision-making, and emotional regulation. When overloaded with constant information from smartphones, the brain can become “exhausted,” leading to symptoms that resemble early dementia, such as:
Difficulty recalling names or words.

• Struggles with writing complex kanji characters due to over-reliance on predictive text or digital input.
• Increased dependence on smartphones for memory tasks, such as looking up information or storing reminders.
• Reduced attention span and challenges with multitasking.

Dr. Yoshikuni Edagawa, a neuroscientist from Waseda University, supports this view, noting that the prefrontal cortex struggles to process the flood of information from constant smartphone use, leading to cognitive overload. This condition is particularly concerning in Japan, where smartphone penetration is among the highest globally, and digital devices are integral to daily life.

The Okumura Memory Clinic: A Pioneering Approach
Located in Gifu Prefecture, the Okumura Memory Clinic is the first in Japan to specialize in diagnosing and treating “smartphone dementia.” The clinic, under Dr. Okumura’s leadership, offers a comprehensive approach to assess and manage cognitive impairments linked to excessive digital device use. While specific details about the clinic’s protocols are still emerging, it is believed to provide:
Diagnostic Tests: Patients likely undergo neuropsychological assessments, similar to those used for dementia, such as the Mini-Mental State Examination (MMSE) or Hasegawa’s Dementia Scale-Revised (HDS-R), to evaluate memory, attention, and executive function. These tests help distinguish “smartphone dementia” from other cognitive disorders like Alzheimer’s disease or vascular dementia.

Personalized Treatment Plans: The clinic emphasizes reducing smartphone usage as a core intervention. Dr. Okumura advises patients to take regular breaks from screens, recommending simple practices like closing one’s eyes for five minutes to activate the brain’s Default Mode Network, which remains active during rest and aids in cognitive recovery.

Alternative Activities: To counteract the effects of digital overuse, the clinic promotes activities that engage the brain differently. Dr. Okumura encourages reading physical books, newspapers, and even tabloid magazines, citing the sensory benefits of “the texture of paper and the smell of ink” as a way to stimulate memory and focus, according to The Japan Times. These activities are believed to reduce reliance on digital devices and enhance cognitive engagement.

Lifestyle Interventions: Patients may receive guidance on improving sleep, diet, and physical activity, as these factors are critical for brain health. Research from Japan, such as the Okayama study, has shown that regular physical activity can lower the risk of cognitive decline, which may complement the clinic’s approach.

Why “Smartphone Dementia” Matters in Japan
Japan’s aging population and high smartphone usage create a unique environment for the rise of “smartphone dementia.” With approximately 15% of Japan’s elderly population (aged 65 and older) already affected by traditional dementia, and an estimated 540,000 cases in Tokyo alone by 2025, the added burden of technology-related cognitive issues is a significant concern. The prevalence of dementia is projected to increase further, with rural prefectures like those in Gifu expected to see rates exceeding 20% by 2025, according to the Toyama Dementia Survey.

Younger individuals, however, are increasingly presenting with memory complaints, a trend Dr. Okumura attributes to the overuse of smartphones and other digital devices. Social media posts on X reflect public concern, with some estimating a “reserve army” of 10 million people potentially affected by this condition. However, skepticism also exists, with users questioning whether “smartphone dementia” is a legitimate medical condition or a form of inflammatory marketing.

Broader Implications and Public Response
The opening of the Okumura Memory Clinic has ignited a national conversation about digital dependency. Japan, a leader in technology, is also pioneering efforts to mitigate its downsides. For instance, digital solutions like the LQ-M/D App, developed by Life Quest Inc. in Tokyo, are being studied for their potential to support cognitive training in patients with mild cognitive impairment (MCI) or mild dementia. Meanwhile, initiatives like Kakogawa City’s use of BLE tags and “Mimamori Cameras” to monitor dementia patients highlight Japan’s innovative approach to balancing technology with care.

Public sentiment, as seen on X, ranges from alarm to curiosity. Posts from users like @mrjeffu
and @JoeHyde14124582
highlight media coverage by Fuji TV and FNN Prime Online, which reported on the clinic’s efforts to address memory loss symptoms resembling dementia. Others, like @ttensan2nd
, express doubt, stating, “No such disease exists at the moment,” reflecting the need for further scientific validation.

Recommendations and Future Directions
Dr. Okumura’s advice aligns with growing evidence about the risks of excessive screen time. A 2020 Sputnik International article quoted him urging people to avoid multitasking with devices, such as using a smartphone while watching TV, as it exacerbates cognitive strain. The clinic’s focus on tactile, non-digital activities like reading physical books could inspire broader lifestyle changes. For example, engaging with physical media may not only reduce screen time but also foster deeper cognitive processing, as the sensory experience of paper and ink engages multiple brain regions.

Looking ahead, the Okumura Memory Clinic’s work could pave the way for further research into “smartphone dementia” and its long-term effects. While the condition is not yet recognized in international medical classifications like the DSM-5 or ICD-10, the clinic’s efforts may contribute to a better understanding of how digital overuse impacts cognition. Japan’s experience could also inform global strategies, as other countries grapple with similar challenges in an increasingly connected world.