The elementary schools in district X began a new athletic program where students participated in school-sponsored sports at least three times per week. During this last school year, the number of obese students attending elementary schools in district X decreased substantially. Based on these figures, the district' s superintendent decided that the new athletic program was more effectual in keeping children, at least while in elementary school, from being obese.
 A large number of the obese children's conditions were caused by depression, which was greatly alleviated by installing psychiatrists in each elementary school in district X weakens the superintendent's conclusion EXCEPT.