Apparently they missed the GENIUS who was Robert Atkins, MD Cardiologist and advocate for reduced carbohydrate intake (particularly sugars, high fructose and other, except complex carbohydrates) and increased lean protein ie. MEAT, and plant protein, and balanced non- long chain fatty acid... fats and oils.
Meat— it is right so to do (biblical even).
Atkins remains uncontroverted AFAIK.