A recent, long-term study suggests that regular engagement with a specific free online brain-training game may reduce the risk of dementia by up to 25%. The findings, published in Alzheimer’s & Dementia: Translational Research & Clinical Interventions, highlight the potential protective effect of cognitive speed training, particularly when combined with periodic “booster” sessions.
The Study Design and Key Findings
Researchers tracked nearly 3,000 adults aged 65 and older for two decades, dividing them into four groups. One group served as a control (no intervention), while the others underwent memory training, reasoning training, or speed training using a particular online game. The speed-training group completed 10 sessions over five weeks, with half receiving additional reinforcement sessions over three years.
The results were striking: participants who engaged in both the initial speed training and the booster sessions showed a 25% reduction in dementia diagnoses compared to those who received no cognitive training. Neither the memory nor reasoning groups demonstrated a significant benefit. The speed-training game focuses on quickly identifying and reacting to visual stimuli, effectively challenging processing speed.
Why Speed Training Might Matter
Neurologists suggest the impact stems from improving cognitive processing speed, potentially buffering against certain types of dementia, particularly those affecting subcortical brain areas. These conditions often manifest as slowed reaction times and difficulty with rapid mental tasks. Dr. Clifford Segil, a neurologist at Providence Saint John’s Health Center, notes that enhancing processing speed may be protective against this decline.
The study’s co-author, Dr. Marilyn Albert of Johns Hopkins University, emphasizes that the consistent cognitive activity promoted by the game likely contributed to the positive effect. Reinforcement through booster sessions appears crucial for maintaining benefits.
Caveats and Further Research
Experts caution that the findings are preliminary. While promising, the study’s results require validation through larger, more diverse trials. Dr. Segil points out that no neurologist currently recommends gaming as a guaranteed dementia preventative. The broader field of cognitive training has long explored brain-boosting activities, but rigorous proof remains elusive.
Beyond Gaming: Holistic Brain Health
While the game shows potential, maintaining cognitive health involves more than digital exercises. Neurologists recommend lifelong learning through classes, reading, and engaging with music. Managing physical health – including controlling blood pressure and remaining physically active – is equally important.
Ultimately, the study underscores the critical role of sustained cognitive engagement in aging, but emphasizes that a holistic approach to brain health is essential. More research is needed to fully understand how and why this specific game may offer protection.
