Key Takeaways:

• Argues that humans are biologically adapted to a hunter-gatherer diet rich in animal fat and protein, and poorly adapted to grain-heavy agricultural diets.
• Frames many modern diseases—obesity, cavities, digestive issues—as consequences of eating foods (especially cereals) for which we are evolutionarily unsuited.
• Anticipates later “paleo” and ancestral-health movements by several decades, making an early case for evolutionary nutrition as a framework.
• Stirs controversy by rejecting standard low-fat advice and recommending a diet that looks, to many contemporaries, shockingly meat-heavy.