"The truth is that a vegetarian diet can provide sufficient protein requirements for humans" Maybe all carbohydrates are basically all the same, but you can't

"The truth is that a vegetarian diet can provide sufficient protein requirements for humans" Maybe all carbohydrates are basically all the same, but you can't say that about proteins. From them you get essential aminoacids, and even if you can get all/most of them from vegetables, you should be careful to not miss some of them having a narrow vegetables selection.