Walking regularly may help slow certain changes in the brain associated with Alzheimer’s disease, according to research . The findings suggest that older adults may benefit from achievable levels of daily movement, without necessarily aiming for the widely promoted target of 10,000 steps.
The study followed nearly 300 older adults who already had early brain changes associated with Alzheimer’s disease. Researchers tracked their physical activity and cognitive health over nine to 11 years.
How Walking May Affect Alzheimer’s-Related Brain Changes
Researchers found that more physically active participants experienced slower accumulation of abnormal tau proteins in certain areas of the brain. These proteins are associated with the progression of Alzheimer’s disease and changes in memory and everyday functioning.
Physical activity did not appear to reduce the buildup of amyloid plaques, another brain feature linked to Alzheimer’s. Instead, the results suggest that movement may be associated with changes in a different biological process involved in cognitive decline.
How Many Steps May Be Beneficial?
The study found signs of benefit among participants taking around 3,000 steps a day. The strongest association appeared in those averaging approximately 5,000 to 7,500 daily steps.
More active participants experienced nearly half the cognitive and functional decline seen in less active participants with similar early Alzheimer’s-related brain changes. These findings describe an association in the study group, not a guaranteed outcome for every individual.
Why the Findings Matter
The results could be encouraging for older adults who find high daily step targets difficult to achieve. Building regular movement into everyday routines may be a more realistic starting point than focusing on a single number.
Walking can be adapted to individual abilities, surroundings and health needs. Anyone with mobility concerns or medical limitations should seek appropriate advice before making significant changes to their activity routine.
Important Limitations of the Research
The study involved a relatively small group, largely made up of well-educated white participants in the United States. Researchers also noted that other lifestyle and health factors could have influenced the results.
The findings do not prove that walking prevents Alzheimer’s disease or that a particular step count will protect everyone’s memory. Larger studies involving more diverse populations are needed to confirm the relationship.
For now, the research adds to evidence that regular physical activity may be relevant to healthy ageing and brain function.
