A recent report from the National Institute of Health claims that increased physical activity is linked to lower instances of obesity among children. The report argues that schools that have implemented more physical education classes have seen a marked decrease in obesity rates among their students. However, the report does not address several factors that could influence these outcomes, such as dietary habits, socioeconomic status, and the role of extracurricular activities.
If these unconsidered factors are significant, the conclusions of the report may not accurately represent the relationship between physical activity and obesity.