This is a meta-study, which looks at a couple hundred studies done on this. From the article: Many of the studies didn't specify their standards for what const

This is a meta-study, which looks at a couple hundred studies done on this. From the article: Many of the studies didn't specify their standards for what constituted "organic" food.. I'd say this is a pretty serious limitation to both the studies in question, and, as a result, to this meta-study.