White bread contains around 49g of carbohydrate ... You'll probably be overconsuming calories and it's not very nutritious. 'But if you're having it as part of a lunch sandwich with lettuce ...
Ingram points out that a typical serving of white bread (one slice or, if you weigh it, about 1-1.1 ounces) contains around 70-80 calories, less than a gram of fiber, and few vitamins and minerals.