5 to 1

Ratio of fast food restaurants to supermarkets in the U.S. According to a recent study from the University of North Carolina that tracked the eating habits of 5,000 people over 15 years, researchers found that living near a supermarket had little impact on how healthily people ate. Living close to fast-food restaurants did, however. The study concluded that "food swamps" — areas filled with convenience stores and fast-food chains selling fatty, high-calorie packaged and processed foods — may contribute more to obesity than "food deserts," communities in which residents must travel more than a mile to access fresh, whole foods. [via The Week]