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?

You base that on what study?

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.

Does he get enough fiber? I had always understood that the lower digestive system requires adequate fiber to function correctly.

And less relevant, I had to chuckle at the "if I had any money or a girlfriend" part. He's not doing anything to break any stereotypes, there.

It's definitely more nutritious than packaged ramen, at the least.

He has adjusted the fiber portion to meet his alimentary needs. That might not have been the most pleasant part of this experiment, but it wouldn't be difficult.