I was just wondering that if the calories per serving of food label include the calories of all nutritive elements like carbohydrate, fat, protein, etc. I mean say if one food has 250 calories and 12 grams of carbohydrates then does it mean that 250 calories include the calories from 12 grams of carbohydrates. So can somebody help me on how to check the calorie listing on food calorie list? I would really appreciate early feedback on this. Thanks!