Vending machines are the most prevalent source of high-calorie snacks in the U.S. There are 1.3 million snack vending machines across the U.S. In an NIH-funded, ecological study, Appelhans and other ...
If you wanted a bag of Doritos from one of Brad Appelhans' experimental vending machines, you'd have to wait. The associate professor of preventative medicine at Rush University Medical Center ...