I've never heard of this diet suggesting not to use soy sauce. What can be absorbed by the body? In other words, what nutrition does soy sauce have? The body can't even provide nutrition. On the surface, you may have lost weight, but once you return to a normal diet, I'm afraid the rebound will be even worse. I suggest you eat normally and watch your mouth. Don't eat too much greasy food in daily exercise. This slimming effect is not only good for your body, but also can get a perfect figure curve. I hope it helps you. If there is a problem, I will ask again and discuss it with you.