Original: As such, this nutritional approach included skimmed milk, whole-grain bread, brown rice, and potatoes prepared without fat, on the premise that such foods supported a diet with the same macronutrient composition as the Paleolithic diet.
Simplified: The book did not say that people should not eat foods that were not available before people started farming, such as skimmed milk, whole-grain bread, brown rice, and potatoes prepared without fat.