Studies that attempt to control for protein intake at 12% while varying carbohydrates and fats are flawed because adding whole foods like starches or legumes would alter the protein number.

“All the studies are varying proteins, carb, and fat. A thing that I want to get rid of. Well, okay, so I'm going to hold protein constant at 12% and so in order to do that, what am I going to do? I'm going to study sugar versus oil. Okay. What have you just learned? Nothing. Because if I add a whole food, starch, I screw up my protein number. If I add legumes, I screw up my protein number.”