Answer: All the food groups feed into the respiration pathway.
Step-by-step explanation:
The overall energy that is received by the cells of the body is released by the carbohydrates, fats and proteins.
If there is no reduction in the overall calorie intake of the food then the sugar free diet will not be effective because all the food groups fall into the respiration pathway.
Ultimately the body will be getting sufficient energy by consuming the overall calorie intake.
Hence, it will not be effective to have a sugar free diet and not reducing the calorie intake.