A note on language:
When this article uses the word “biology,” it does not mean a dietary philosophy, a wellness trend, or a school of thought. Biology is not vegan, carnivore or paleo. It means the fixed, physical specifications of the human machine – the pH of the stomach, the architecture of the gut, the molecular requirements of the cell. These are not debatable positions. They are measurable constants. Everything else – what we choose to eat, believe, or sell – is opinion. Biology is not.
Watch a lion on the Serengeti for long enough, and you will notice something remarkable , not in what he does, but in what he never does. He doesn’t consult anyone. He doesn’t second-guess his appetite. He doesn’t rotate through dietary philosophies based on which one trended on social media this season. He simply exists in a state of biological fluency, as though the rules of his own body were written in a language he was born already speaking.
We used to understand this about animals. We still do, for every animal except one.
For every other species on Earth, we accept without argument that biology is the boss. We don’t recommend kale to a cheetah. We don’t suggest a carnivore “explore plant-based options.” We don’t call a ruminant faulty for requiring specific forage. We understand, intuitively, that the map and the terrain are identical, that what an animal is built to eat and what it actually needs are the same document.
Then we turn to the human, and all of that certainty evaporates.
Somewhere along the way, we arrived at a peculiar consensus: that the human body is the one exception to the biological rules that govern everything else alive. That because we can imagine a dietary system, because we can conceptualize “plant-based” or “industrial” or “carnivore” or “keto”, our cells will somehow renegotiate their ancient contracts to accommodate our latest intellectual fashions.
We listen to influencers with zero background in biochemistry as though they were capable of rewriting our genetic specifications with a trending hashtag. We buy the book. We follow the protocol. We pivot, again, to the next one.
Food as a substitute for Religion
And we do this against a backdrop of evidence we somehow keep refusing to look at directly: the body is not getting better. It is getting worse. Dramatically, systematically, expensively worse.
The proliferation of disease, thousands of named syndromes, countless unmapped pathologies, an epidemic of autoimmune conditions in which the body has become so disoriented it begins attacking itself, is not a mystery. It is a message. The machine is telling us, in the only language a machine has, that something has gone wrong at the level of inputs.
Here is the contradiction at the center of modern life: we have simultaneously stripped the human being of his biological dignity, reduced him, philosophically, to a “mere animal,” a cosmic accident, yet at the same time elevated him, practically, to the status of a god who can decide for himself what his anatomy requires. We are nothing special, we say, and also: we are so special that biology’s rules do not apply to us.
This is not humility and it is not science. It is the software attempting to override the hardware. And it doesn’t work, for the same reason it never works: you cannot negotiate with a fixed constant.
The stomach has a specific acidity. The small intestine has a specific architecture. The cell has specific molecular requirements that have not changed in 300,000 years. These are not suggestions. They are not defaults that can be updated in the next firmware release. They are specifications, as non-negotiable as the tensile strength of a bridge cable or the orbital mechanics of a planet.
We tell ourselves a comforting story about why none of this matters. The story goes like this: we are evolving. We are not the same humans who roamed the Pleistocene. We are adapting, in real time, to modern foods and modern stresses, and what looks like disease is actually the growing pains of a species in transition.
If an Oxymoron ever existed
It is a useful story. It frees us from accountability. If the body is a work in progress, then its current suffering is not a failure, it is just the process.
But the evidence doesn’t cooperate.
CT scans of 3,500-year-old Egyptian mummies reveal the exact same arterial plaque that cardiologists treat today. Researchers examining the remains of Unangan hunter-gatherers — men who never touched a grain of processed sugar, found evidence of cardiovascular disease that mirrors our own. The body, across centuries and continents and radically different diets, keeps breaking in the same places. Not because every era made the same dietary choices, but because every era found its own unique way to violate the same fixed requirements.
The machine doesn’t have a Paleo mode and an Industrial mode. It has an Operating Mode and a Friction Mode. The smoke looks different across centuries. The fire is always the same.
How did we even get to this
The most insidious consequence of the “we are evolving” narrative is that it quietly relocates the problem. It makes health feel like a historical puzzle, which era got it right? The Paleolithic? The Mediterranean 1950s? The Blue Zones? rather than a biological one. It turns us into archaeologists of wellness, forever excavating the past for the diet that will finally make sense of the present.
But the body doesn’t need ancient carrots. It needs specific molecular compounds. And those compounds are not lost in time, they are written, with extraordinary precision, into the design of the machine itself.
The mismatch isn’t between Ancient and Modern. It is between Requirement and Input. Between what the hardware needs and what we keep deciding to give it.
None of this is cause for despair. If anything, it is the most clarifying idea available to us right now.
The lion on the Serengeti is not confused about what he needs. He is not anxious. He is not sick from following the wrong protocol. He is simply running the correct program on the correct hardware, and the result is an animal that works.
We have the same hardware. We have had it for 300,000 years. It hasn’t changed, and it won’t, not in any timeframe that matters to us or our children or their children.
What has changed is only our willingness to listen to it.
That willingness, the decision to stop overriding the body and start reading it, may be the most radical act available to a modern human. Not a diet. Not a supplement. Not a biohack.
Just the simple, unfashionable act of taking the machine seriously.
The body is not a theory under development. It is a finished specification that has been waiting, patiently, for us to stop arguing with it.
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