Restaurant chains are adding low-carb meals to target the rising number of low carb dieters who are on diets like Atkins or the South Beach Diet. Popular chains like T.G.I. Friday's, Blimpie, Ruby Tuesday, Chili's, Subway and many others have new menu options targeted at the dieters. Pizza Hut is also planning to add special menu options. Other restaurant chains are still holding out in case the diet trend fades out.