Researchers in Arizona looked at whether a little education could change what goes in the supermarket basket. They recruited 153 people who were randomly selected at a supermarket in Phoenix. Some shoppers got counseling from a nutrition educator, who offered an overview of labels and shelf signs in the store that tagged products as being a “healthier option” or “immune booster” or “calcium rich,” among other attributes set out in federal and American Heart Assn. guidelines. The educational sessions lasted last than 10 minutes… The sessions didn’t have any effect on the total servings of vegetables purchased, nor did they influence the amount of total fat, saturated fat or trans fat they put in their carts. But the shoppers who got the counseling did buy twice as many dark green and yellow vegetables and 75% more fruit.