As these shakes are designed to be Meal Replacements rather than simply protein shakes, they do need to contain a certain amount of energy (amount of Calories) so as to provide the body with sustenance. Some of this energy/Calories is provided by carbohydrates (and sugars), some by protein and some by fats. The majority of sugars in the FAST Shakes is naturally occurring lactose (milk sugar) which is coming from the milk ingredients used in these shakes rather than added sugars. 1 cup of liquid milk for example can contain up to 13g of naturally occurring lactose (sugar).
BT Nutritionist 🙂