Requiring calorie information to be displayed on roughly 5 million vending machines nationwide will help consumers make healthier choices, says the Food and Drug Administration, which is expected to release final rules early next year. It estimates the cost to the vending machine industry at $25.8 million initially and $24 million per year after that, but says if just .02 percent of obese adults ate 100 fewer calories a week, the savings to the health care system would be at least that great....