The thing is with the fitness industry. Everyone says that everything is proven in labs. I'm sure you can find me articles that say you're correct and I will be able to find you the same to prove I am correct. However I speak from experience, both from what I tell my clients to do and from what I have done myself. I will not say anything else does not work but I do know that my approach to diet works because I've done it myself or am still doing it myself and have applied it to clients and have seen results.