The biggest problem isn't what he's clearly missing; its what he's missing that we don't know about, and won't suffer any consequences for years. Saidajigumi's comment about whole foods is appropriate: whole foods have better results than any manufactured powder or drink made, but its not clear why. And how long will it take before he experiences the results?
The point is that there aren't any studies yet because we don't know what to study. You can't say "show me the science" when the point is there is no science yet, or not enough. That's just a cop-out.
