14-Year Study Links Daily Step Counts to Better Attention and Decision-Making

Key points

• Researchers analyzed Fitbit data and cognitive test results from 3,093 participants in the NIH's All of Us Research Program over a 14-year period (2009-2023).
• Participants were grouped by activity levels: 5,108, 8,875, and 14,161 average daily steps. Those in the higher activity groups scored better on attention and decision-making tasks.
• Sustained attention scores were 1.76 to 2.17 points higher in more active groups compared to the least active group, after adjusting for age, education, and income.
• Higher systolic blood pressure was linked to poorer performance on reward-choice tasks, accounting for about 5% of the association between activity and cognition.
• The study is observational, meaning it cannot prove that walking causes better cognition, and it did not find significant links between activity changes over time and cognitive performance.

Background

This study builds on recent research linking physical activity to health outcomes. A September 2026 study found that adding 1,000 steps daily cuts heart risk by 17% for hypertensive adults, while a UK study suggested that walking faster may offer similar benefits to walking more. Another study linked focused attention to reduced inflammation, highlighting the complex interplay between physical activity, brain function, and bodily responses.

How outlets are covering it

ScienceAlert and News-Medical both emphasize the observational nature of the study, noting that it cannot establish causation or a specific daily step target for cognitive health. The Washington Post focuses on the broader theme of walking benefiting brain health, citing historical figures who credited walking for creative thinking. Shepherd Express highlights the potential for movement to boost creativity, though it provides less detail on the specific cognitive tests used in the study. All sources agree that the findings add to the growing body of evidence linking physical activity to cognitive function, but they differ in their emphasis on the practical implications for daily life.

Why it matters

The findings suggest that regular physical activity may support cognitive functions essential for everyday life, such as maintaining concentration and making sound decisions. While the study does not prove that walking improves cognition, it provides valuable insights into the relationship between physical activity and brain health, potentially informing public health recommendations and individual lifestyle choices.

What to watch

Future research should include repeated cognitive assessments to determine whether physical activity is associated with changes in cognition over time or a lower risk of dementia. Additionally, studies should account for factors such as obesity and smoking to better understand the relationship between physical activity, blood pressure, and cognitive function in diverse populations.