By binding calcium to the extra proteins and sending the globs through your kidneys, where they turn into kidney stones. Anything more than eight percent protein in your diet and your whole system must work overtime to get rid of it. You need protein every day, but you don't need much. More protein means fewer carbos. A balanced diet includes very little protein.
Soy products are full of protein.
Too much protein. Tofu, I'm afraid, is garbage food, no matter what it says in Vegetarian Times . They have their advertisers too, you know. It clogs the valves and starves the engine. It is very hard to turn parts into fuel, yet your body will do it if need be.