Food & Civilization

In the standard story of human origins, the turning point is upright walking, tool-making, language. Wrangham offers a "lower" yet more radical answer: cooking. Raw-foodists believe raw is the most natural, healthiest diet; he counters with evidence — modern raw-foodists, even with blenders and living in well-stocked societies, tend to be underweight, with women often ceasing to menstruate (reduced fertility). A wild human eating only raw food simply could not feed itself in nature.

The mechanism is energy. Heat gelatinizes starch, denatures protein, softens fiber — food becomes far easier to digest and absorb, raising the net energy per unit of food. Raw meat and raw tubers demand heavy chewing and long digestion for a poor return; once cooked, both costs plummet and an energy surplus appears.

This surplus gets reallocated — the "expensive-tissue hypothesis." The gut is a heavy energy consumer; cooked food lets it shrink. The energy saved goes to another heavy consumer: the brain. Among primates, humans have an outsized brain and an unusually small digestive tract — the very fingerprint of that trade. A gorilla chews most of its day; a human spends roughly an hour eating. Fire "outsourced" part of digestion to outside the body.

Cooking also reshaped society. Food must be processed before eating, so there is now "cooking," waiting and sharing around the hearth, a division of labor by gender. The hearth became humanity's first home. So we are not "the ape that uses tools" but "the ape that cooks over fire" — our dependence on cooked food isn't a cultural choice; it is written into our physiology.

Wrangham dates cooking's origin to roughly 1.8 million years ago with Homo erectus, but firm archaeological evidence of controlled fire is much later (around 300,000–400,000 years ago) — that gap is the main scholarly dispute over the hypothesis. His inference from "cooking = women" to entrenched gender divisions has also been criticized as projecting modern labor patterns onto prehistory.

Salt is the only mineral humans eat directly, and a bodily necessity — lacking it, you die. But before refrigeration, salt had a second, irreplaceable use: preservation. Without salt, meat, fish, and cheese could not be kept; cities could not stockpile food for winter, armies could not march far, ocean voyages could not be provisioned. So salt rose from a seasoning to a foundational constraint on whether a civilization could endure and expand.

Kurlansky's method is to string world history together through one small thing. Scarce yet necessary, salt naturally became a handle on wealth and power: a Roman soldier's pay was tied to salt (the word "salary" comes from the Latin sal); China placed salt and iron under state monopoly as early as the Han dynasty, with the salt tax long a pillar of imperial finance — the Discourses on Salt and Iron being precisely a grand debate over whether the monopoly should exist.

Because everyone needs it and it can be monopolized, salt became the ideal thing to tax — and repeatedly ignited revolt. Before the French Revolution, the salt tax (the gabelle) was a focal point of public grievance; Gandhi's 1930 Salt March — walking to the sea to make his own salt in open defiance of the British salt monopoly — worked precisely because salt is a tax even the poorest cannot escape, so resisting the salt tax could rouse a whole nation.

Salt also reshaped geography and technology. Salt-producing sites (wells, lakes, coastal pans) gave rise to cities and trade routes; to find, move, and make salt, humans developed mining, deep-well drilling (ancient China's deep-drilling technology led the world by over a thousand years), and canals. Many old cities carry salt in their very names.

Then, almost overnight, salt lost its magic: nineteenth-century industrial salt production made it dirt cheap, and twentieth-century refrigeration voided its preservative role. A strategic resource that ruled humanity for millennia became the most unremarkable item on the supermarket shelf. What Kurlansky really wants to say: the thing taken for granted and beneath notice today may be the very axis the whole world once turned upon.

It is large, anecdote-rich, and loosely structured — more a collection of wonderful stories about salt than a tightly argued line; at times the "everything connects to salt" framing feels stretched. Read it for perspective and pleasure, not for a rigorous causal model.

The anthropologist Mintz asks a deceptively simple question: when, and why, did the English become so devoted to sugar? Four hundred years ago, sugar in Europe was still a rare luxury, a medicine, a sculptural ornament on aristocratic tables; today it is everywhere, cheap to the point of nearly free. What happened in between was not a natural evolution of taste but the workings of an entire political economy.

He tracks how sugar's "uses" descend tier by tier: first medicine (medieval medicine treated sugar as a drug), then spice, then aristocratic display ornament, then preservative; as Caribbean plantation sugar drove output up and prices down, sugar stepped down from the high table to become a sweetener ordinary people could afford. The social meaning of a thing changes with who can get it.

The pivotal turn was sugar's marriage to three bitter, stimulating tropical drinks — tea, coffee, cocoa. Sweetened hot tea became standard for the English working class. Mintz's insight: that cup of sweet tea was no small thing. It gave workers short on fat and meat a source of cheap, fast, instant calories and stimulation — able to stand in for a meal and carry them through long hours. Sugar was thus woven into the labor rhythm of industrial capitalism.

A cruel loop emerged: colonial plantations used slave labor to produce cheap sugar, shipped it back to the metropole, and fed it to equally exploited factory workers so they could sustain their labor at lower cost. Sugar linked two exploited populations across the Atlantic into a single chain. "Sweetness" is taste; "power" is who decides what you eat and why — the two words of the title were always one.

From this Mintz draws a general claim: taste is not innate and private but produced by production, trade, and class relations. You think you simply love sweetness; in fact an entire history delivered it to your lips and made it feel like instinct.

The argument is rooted mainly in Britain and the Caribbean and may not transfer to other civilizations' sugar histories; written in 1985, it says little about the later high-fructose corn syrup, ultra-processed foods, and obesity. It is a work of historical anthropology, not nutrition or public health.

The title borrows from the psychologist Rozin: a koala eats only eucalyptus and never agonizes over what to eat; the omnivorous human can eat anything and so must constantly judge what is edible, what is poison, what one should eat. This innate anxiety was once resolved by culture (cuisines, taboos, grandmother's rules). Modern industrial food and an endless churn of nutrition theories have shattered that traditional wisdom and thrown the dilemma back at us, naked.

Pollan's method is to trace the complete food chain of four meals by hand, all the way down to soil and energy. The first is industrial fast food. Following it down, he finds a startling fact: of the thousands of dazzlingly varied products in the supermarket, the vast majority resolve at their source into a single plant — corn. The syrup in soda, the oil on fries, the beef (from corn-fed cattle), thickeners, preservatives — all are corn that industry has taken apart and reassembled.

And corn's high yield depends on synthetic nitrogen fertilizer, which depends on natural gas. So the base of this food chain is not sunlight but fossil energy — we are, in essence, "eating oil." Pollan drives it home with carbon-isotope evidence: analyze the carbon in an American's body and you find we are mostly built of corn. A diet that looks abundant and varied rests on a monoculture that is extremely uniform and dependent on a non-renewable energy source.

He then traces "industrial organic" (the organic food on supermarket shelves, which at scale resembles industrial farming more and more), then a truly ecological farm, and finally hunts and gathers a wholly self-made meal by hand. The four meals form a spectrum from most alienated to most firsthand. He doesn't want you to return to hunting and gathering; he wants you to see — the industrial food chain's greatest feat is keeping you ignorant of where what's on your plate comes from and what it cost. The modern dilemma's antidote isn't more nutrition labels but rebuilding the connection between eating and its source: see a meal's origins, and eating becomes again a choice with ethical weight, not mere consumption.

It focuses on the U.S. food system (with corn-subsidy policy at its core) and may not apply to other countries' agriculture and diets; a 2006 book, it has nothing on the later rise of plant-based meat, delivery platforms, and ultra-processed foods. Its conclusion leans toward a firsthand small-farm ideal and underanswers whether that can scale to feed the world's population.