So much wrong about this chart. It is factually correct, but it answers the wrong question. This chart makes it way too easy to optimise for cheap protein, which is misleading. It is not this what it takes to have a healthy organism. It takes a varied diet, with balanced quantities of liquids (see milk), vitamins (see sprouts), fatty acids (see salmon), minerals (see shrimps, eggs, walnuts), and actually carbs (potatoes, rice, spaghetti).