Restaurants can persuade patrons to choose healthier foods by adjusting the font size of numbers attached to nutritional information on menus, according to a recent study. U.S. restaurants with more than 20 locations are already required to show the calorie content of food on their menus. By representing these values incongruously — using physically larger numbers on the page when they’re attached to lower-calorie options, and smaller numbers for high-calorie foods — the researcher said that businesses can successfully ‘nudge’ customers toward healthier choices.