Check out the causality relationship.
American high school students with poor grades are much more likely to have unhealthy behaviors — including illegal drug use — than teens at the top of the class, federal health officials say.
There’s a strong link between teens’ health habits and their academic achievement, according to a new U.S. Centers for Disease Control and Prevention survey.
“As our nation’s children embark on another school year, it’s important to remember that health and academic performance are not mutually exclusive,” said the CDC’s director, Dr. Brenda Fitzgerald.
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The study doesn’t show a direct cause-and-effect relationship. Still, “these findings highlight the connection between student health and academic achievement. Schools, parents and communities can all work together to ensure a healthy and successful future for our children,” Fitzgerald said in an agency news release.
These are markers. As are many other things that progressives hate to admit: e.g., single family households.