Regulations on school snacks related to healthy childhood weight

In a large scale study examining the relationship between state laws regarding the types of snacks and drinks sold in public schools, researchers found that stronger laws limiting availability of unhealthy snacks were correlated with less weight gain over a 3 year period during late childhood/early adolescence.  For a review of the study, please visit the following website:
 http://www.nytimes.com/2012/08/13/health/research/study-links-healthy-weight-in-children-with-tough-snack-and-sugary-drinks-laws.html?_r=1&smid=fb-share.