Shopping At Costco Instead Of The Supermarket May Wreck Your Diet

It's not hard to find a snack during any shopping outing, no matter the kind of your store you're in. Places like CVS and even retailers like Old Navy have increasingly added packaged foods and beverages to shelves. These non-grocery stores are taking a page from major mass merchandisers like BJ's and Costco, where customers can pack a set of lawn flamingos and a case of mac and cheese into a single shopping cart, sometimes at a better price than at the supermarket. Consumers are taking advanta...