After hearing something thoughtful interviews with journalist Julia Belluz and scientist Kevin Hall about their new book Food Intelligence: The Science of How Food Both Nourishes and Harms Us and KCRW food expert Evan Kleinman praise the book, I broke down and decided to see if the authors had any new insights into the exploration of what I call humans’ mismanagement of eating. The book begins on a promising note: The authors observe that in the animal kingdom, we are hard-wired with “food intelligence,” a natural-born instinct to regulate the quantity of what we eat and to target foods that our body craves for optimal nutrition. Our instinctive connection with food went haywire in the twentieth century: “Many of us started to eat too much, and the wrong things, even when we didn’t want to. Obesity rates began rising, first in rich, Western, industrialized countries such as the United States, then elsewhere.” Between 1980 and today, the obesity rate has doubled in several countries. Seventy percent of American adults and a third of U.S. children are classified as overweight or obese. Obesity-related diseases such as type 2 diabetes kills over half a million Americans a year. Obesity-related health costs are in the trillions.
One of the major reasons for this breakdown in our instinctive hardwiring to naturally eat well is our disconnection from food: how it’s grown, produced, and cooked. We are now addicted to factory-produced fat, sugar, and salt.
Shaming and the gospel of self-discipline doesn’t help even though, as the authors point out, the wellness industry points an accusatory finger at our own moral shortcomings (lack of willpower, gluttony, and sloth) for our failures at weight management. The diet industries, the authors claim, are asking the wrong questions when they ask what is the best diet and how people can lose weight. For example, there are influencers who say low-carb is the best, but the authors show studies that contradict that claim. Low-carb diets are no better than low-fat ones in the long-term. The authors argue that championing the so-called ultimate diet is not the right question. Instead, the more helpful question is this: “Why do we eat what we eat?” Their obsession with answering this question is what propelled them to write the book.
The authors explain the problem of calories-in, calories-out as a surefire model for weight loss. The model is complicated and eventually sabotaged by the way the body reacts when we reduce calories. The metabolism slows down, we burn fewer calories doing the same exercise than we did initially, and our hunger signals rebel and scream “Eat more!” Contrary to the cheery claims of the wellness industry, eating less and exercising more usually fails within a year.
A more promising approach to weight management is avoiding ultra-processed foods. The more of these foods we eat, the less we are able to regulate our appetite, resulting in “a calorie glut” and weight-gain hell. But becoming food literature, replacing processed foods with whole foods, and learning to enjoy this exchange requires time and resources, which are lacking in many. Convenience and cost drive many Americans to processed food. Therefore, “the root causes” of obesity are structural. In the words of the authors: “It was never about us as individuals. Our food environment is wrecking us.” Our food environment is rewriting our brains to make us consume a calorie glut. Therefore, the food environment is making us overweight, sick, and unhappy. It is killing us.
Don’t consult Food Intelligence for the simple call to eat like your great-grandmother did. Even that sentiment is based on myth, the authors point out. Your great-grandmother may have spent endless hours in the kitchen exhausted while struggling “with hunger and nutrient shortfalls.”
One of the book’s objectives is to show how “old, unproven ideas and outdated policies continue to guide our current thinking and approaches to food.” They make it clear early on that they won’t be pushing this or that diet or even promoting “clean eating.” If you’re looking for food puritanism, then look elsewhere. Kevin Hall admits to eating ultra-processed food and Julia Belluz admits to eating too much sugar. This book is not so much about rigid prescriptions as much as helping you change from a mindless eater to an intelligent one.

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