The real problem with this diet is it doesn't contain any fruits (Avocados, Cucumbers, Olives, Bananas, Grapes, Berries, etc). Our ancestors lived primarily on raw fruits so they are definitely the healthiest natural/uncooked foods for humans.
Fruits cost more than $3. I think the real problem, though, is that the whole "sugar is poison" has gone to everyone's head, and it's now socially unacceptable to recommend anything containing sugar. The problem is that fruits have a lot of fiber wrapped around that sugar, while soda does not. Have a cup of blueberries with breakfast, an avacado and some tomatoes at lunch, and strawberries for desert. A few servings…
Simple test ..consume some carbohydrates..if one-half to one hour later you get sleepy to the point of napping you should have your health checked..