Daily step counts linked to improved adolescent mental health

A study of over 5,500 adolescents in the United States has found that higher daily step counts are linked to fewer mental health problems one year later. Researchers utilized wearable devices to objectively track movement, rather than relying on self-reported questionnaires, providing a more accurate measure of habitual activity.

The findings, published in JAMA Network Open, indicate that the mental health benefits increased steadily with higher step counts, with no observed plateau. Adolescents taking fewer than 5,000 steps per day reported the most mental health symptoms, while those reaching 12,000 or more steps showed the fewest symptoms of anxiety, low mood, and behavioral issues.

Brain imaging revealed physical correlations, specifically thicker tissue in two brain regions: one associated with movement and another tied to managing conflicting information. While the increased activity correlated with improved emotional well-being, researchers noted that higher step counts were not meaningfully linked to academic performance or school grades.