A new study in Nature Human Behaviour reveals that both genetics and environmental factors influence when babies start walking. The research analyzed data from nearly 71,000 children across Norway, the Netherlands, and the UK. It shows that a substantial portion of the timing is determined by inherited genes.
Researchers identified 11 specific genetic markers that explain about 25% of the variation in walking age. These genetic markers overlap with those associated with brain size and folds in the cerebral cortex. These genes are also connected to conditions like attention deficit hyperactivity disorder (ADHD).
Angelica Ronald, a professor at the University of Surrey, stated, "Parents can provide a constructive environment and support their children, but they're not 100 per cent in control. Genes also influence this timing." The study challenges the idea that earlier walking is always better.
The findings suggest that individual differences are often within the range of normal development. Late walking (beyond 18 months) is not always a cause for concern. The research helps shift the focus away from parental pressure to reach developmental targets.
Ronald said, "It's reassuring to know that parents aren't solely responsible for when their baby starts walking." The study encourages caregivers to focus on healthy, loving environments. Each baby develops at their own pace, and that pace is perfectly okay.