Yes, it means everything. Even those wispy grains of wheat have protein, and it has its own special controversy surrounding it. You've heard of gluten, haven't you? Yep, that's protein.
Protein isn’t an exact science
Dr. Neabore admits there’s a lot we don’t know about protein levels yet, but he’s still pretty sure you’re worrying way too much about it.
“There’s a lot of information out there, [but] I don’t think anyone knows 100% yet... Everybody has different activity levels and deficient levels -- there’s no one absolute answer.” Not even the US government (which issues dietary guidelines) knows for sure, and even they say that at the very least, guys could probably stand to cut back on it a bit.
“There’s this conspiracy where people think they’re not getting enough protein. From a medical point of view, we don’t really ever see protein deficiency. Aside from ICU patients, or people who are really sick -- you would look at them and know they didn’t look well, whether it was liver disease or AIDS -- those are people that may have protein deficiencies.”