Overview

• A genome-wide association meta-analysis revealed that genetics accounts for about 25% of the variation in the age at which babies take their first steps.
• The study identified 11 genetic markers tied to walking onset, offering targets for further biological and clinical research.
• Genes influencing walking timing are also linked to cortical development, including brain folding and ridges, highlighting neurodevelopmental overlap.
• Later walking onset within the typical range correlates genetically with reduced ADHD risk and higher educational attainment.
• Findings could refine clinical screening tools, aiding earlier identification of developmental concerns and informing public health strategies.