Great news for all our calorie-and-carb-conscious readers: lettuce wraps are healthier than bread! A single lettuce leaf contains less than 2g carbs and 11 calories, while a tortilla has about 6g carbs and 41 calories. And when it comes to white bread, a single slice has around 12g carbs and 67 calories... Ouch! Lettuce clearly wins the healthy race here — by replacing bread or the classic flour tortilla with lettuce leaves, you can cut down calories and carbs. As long as you pair it with healthy fillings, of course. Wrapping a pizza in lettuce will not make it any healthier.