Since organic foods are grown without pesticides and using natural fertilizers, that must mean they’re more nutritious and packed with good-for-you vitamins, right? Not quite. Stanford University researchers analyzed 17 studies linking organic and conventionally grown foods to health outcomes and concluded that organic products are not necessarily more nutritious than their conventional versions, and no less susceptible to contamination from microbes like E. coli. Organic fruits, vegetables and dairy products are less likely to contain pesticide residue, however, which is one reason some people prefer products grown this way. But claims that organic growing captures more nutrients and is “healthier” don’t seem to hold up.