As a sports medicine physician, I often emphasize how physical activity protects not just the body—but the brain as well. A compelling new study published in JAMA Network Open takes this notion one step further: it suggests that how we move through the world—specifically, our travel mode—may influence the risk of dementia, including Alzheimer’s disease.
The Study in Brief
Researchers used data from the UK Biobank (nearly 480,000 adults, mean age ~56 years) in the U.K. to explore associations between travel mode (non-active: car/bus; walking; mixed walking; cycling or mixed-cycling) and long-term brain health outcomes. Participants were followed for a median of 13.1 years, with nearly 8,845 incident dementia cases (including Alzheimer’s) recorded.
The key findings:
- Those who engaged in cycling or mixed-cycling travel modes had significantly lower risk of all-cause dementia (hazard ratio [HR] ~0.81), Alzheimer’s (~0.78), and both young-onset and late-onset dementia, compared with non-active travel.
- These cycling modes were also associated with greater hippocampal volume and higher volumes in certain brain gray matter regions—suggestive of better brain structure.
- Interestingly, walking alone did not show the same strong protective association; in fact, walking only had minimal or even slightly negative structural-volume associations in this study.
Why It Matters for Athletes & Active Adults
We know exercise benefits the brain—but this study highlights two particularly actionable points:
- Engagement matters: Travel by bicycle or combining cycling with other modes may deliver more cognitive and structural brain benefits than passive modes (car, bus) or even walking alone. The added intensity, navigational challenge, and engagement of cycling might drive these effects.
- Brain health through lifestyle: For athletes and fitness enthusiasts, these findings reinforce that everyday movement counts—not just the gym. How you commute, run errands, or travel can contribute to your long-term cognitive resilience.
As a physician, I’m excited because these are simple, scalable changes. Instead of simply recommending “more exercise,” we can talk about shifting travel habits: replacing short car rides with bike rides, mixing in active commute segments, or choosing routes and modes that engage the body and brain.
Practical Strategies You Can Use
- Swap one or more short car trips this week for a bike ride (or mixed-mode ride: bike + public transit).
- When feasible, use a mixed-cycling mode (cycling part of the trip, then bus/train) to increase active travel time.
- If cycling isn’t viable, find ways to increase cognitive/motor engagement in your daily travel: a brisk walk through a varied route, carrying a small load, navigating turns, or switching between modes.
- Combine this with your existing fitness routine: strength training, cardio work, and mobility remain central—but remember your travel habits are part of the package.
Final Thoughts
This new large-scale study offers strong support for the idea that how we move matters for brain health. Cycling and mixed-cycling travel modes were linked with lower dementia risk and better brain structure. For athletes and fitness-oriented individuals, the message is clear: everyday movement—especially engaging modes of travel—can be another tool in your longevity and brain-health arsenal.
Reference:
Hou C, Zhang Y, Zhao F, et al. Active travel mode and incident young-onset and late-onset dementia: a prospective cohort study. JAMA Network Open. 2025;8(6):e2514316. doi:10.1001/jamanetworkopen.2025.14316
