There was a version of the Paleo diet that made sense. Cut out processed food. Prioritize protein and vegetables. Reduce refined carbohydrates. Eat real food. That version worked for a lot of people and the core ideas held up to scrutiny.
Then it became a brand. And that’s where things went sideways.
From Sensible Framework to Tribal Identity
By the mid-2010s, Paleo had mutated from a dietary guideline into a lifestyle identity with its own mythology, products, and enemies. The original evolutionary rationale — eat like a pre-agricultural human — got stretched to justify an ever-expanding list of approved foods and condemn everything else.
Legumes became forbidden despite being among the most consistently studied longevity-associated foods. Dairy was vilified despite strong evidence for its benefits in athletically active populations. White rice was treated as poison. Meanwhile, “Paleo” cookies, brownies, and cereals appeared on shelves made from expensive nut flours — technically compliant but nutritionally absurd.
The diet started to look less like ancestral wisdom and more like a premium brand extension.
The Scientific Foundation Got Complicated
The original Paleo premise — that modern chronic disease results from evolutionary mismatch between our genes and agricultural foods — has real support in some areas and real problems in others.
Grains are a legitimately recent addition to the human diet. But “recent” in evolutionary terms means ten thousand years, which is also long enough for meaningful adaptation to have occurred in some populations. Lactase persistence — the ability to digest milk sugar in adulthood — evolved in multiple populations independently, specifically because dairy was a valuable caloric resource.
The idea that there was one ancestral human diet is also ahistorical. Pre-agricultural humans ate whatever was available where they lived. Some populations thrived on near-carnivore diets (Arctic peoples). Others ate predominantly plant-based (tropical foragers). The “Paleo diet” as practiced in American suburbs doesn’t particularly resemble any of them.
What Survived the Hype Cycle
The useful core remains: reducing ultra-processed foods, prioritizing protein, eating plenty of vegetables, and paying attention to food quality. Those principles are robust and not particularly controversial among nutrition researchers.
The religious adherence, the demonization of specific foods with solid nutritional value, and the expensive specialty products: those can go.
If Paleo gave you a framework that helped you stop eating junk food and start eating more protein and vegetables, great — the mechanism worked. But you don’t need to maintain the ideology to maintain the results. Eat real food, train consistently, and don’t let dietary tribalism make nutrition more complicated than it needs to be.