By David Leonhardt for the New York Times.
A food audit
Every year, many people set out to change their eating habits during the first few weeks of the year. Often, it turns out to be an unpleasant and demoralizing experience.
It doesn’t have to be.
The idea of occasionally resetting some of your food habits is not just a silly New Year’s custom. Mainstream American food culture is pretty unhealthy. We are surrounded by huge portions of highly processed food. We’re bombarded by advertisements telling us that we’ll be happy and hip if we eat more snacks and drink more alcohol and soda.
If you don’t occasionally stop to think about what you’re eating, you will probably end up with some bad habits. And even if you are mostly satisfied with your eating, you may have mindlessly accumulated some habits that are worth dropping.
I tend to avoid New Year’s resolutions. But every January, I do an informal audit of my eating and drinking patterns and try to tweak a few. Today’s newsletter will offer advice for anybody interested in doing something similar, with help from academic research and other recent pieces of journalism.
Yes, you can
First, the most basic point, because I know the blizzard of seemingly conflicting dietary studies can seem confusing: There is no mystery about how to eat better.
You don’t need to worry about the fine points of the latest scientific research. The overall picture has been remarkably consistent for years. A healthy diet revolves around mostly unprocessed foods, like vegetables, fruits, nuts, beans, whole grains, fish and some meat. Michael Pollan’s seven-word manifesto still holds: “Eat food. Not too much. Mostly plants.”
Obviously, we’re all going to eat some processed foods. Many are tasty. But many are also packed with artificial substances that sound like something out of chemistry class — and contain many calories per bite.
Which brings me to the second basic point: If you want to lose weight, as many people do, calories and exercise remain the two crucial levers. Yes, there are nuances: The rate at which people burn calories can change over time — and decrease if they go on a crash diet — which can make losing weight difficult, especially for obese people.
Yet the basic principle holds. As Ju Young Kim wrote in a paper for The Journal of Obesity and Metabolic Syndrome, “Reducing daily calorie intake is the most important factor for weight loss.”
The key issue is finding a sustainable way to eat healthily, in terms of both quality and quantity. Very few New Year’s resolution diets are sustainable. They can even be counterproductive, by leaving people with the mistaken impression that progress is impossible.
“A diet is an unpleasant and short-lived way to try to lose weight,” Traci Mann, who runs the health and eating laboratory at the University of Minnesota, told my colleague Tara Parker-Pope.
Joy and simplicity
What are some more promising approaches?
Remember the joys of good food. I like potato chips as much as the next person — maybe more when it comes to salt-and-vinegar chips. But they really are not as satisfying as a good fish taco, insalata verde, schnitzel, chicken tikka masala or plate of green beans with garlic and Sichuan peppercorns.
The academic study that I mentioned above found that the so-called Mediterranean diet was among the successful approaches to eating better. Remember: People who live in Mediterranean countries are famous for their love of eating well. It is not a sacrifice.
Rules can be helpful. Most of us don’t have the energy or patience to think constantly about whether we’re eating right. “The paradigms around willpower don’t work,” Dr. Judson Brewer, a behavioral scientist at Brown, said. It’s exhausting to analyze every snack, beverage and meal for its size and composition.
That’s why simple rules can make sense. They reduce the cognitive load of healthier eating.
When I wanted to lose weight years ago, I stopped drinking orange juice with breakfast, and I’ve never gone back. (Fruit is healthier than juice.) When my wife and I wanted to cut back on alcohol, we set aside three weeknights in which we don’t drink. (Our new treat is nonalcoholic beer, inspired by John Seabrook’s recent New Yorker article.)
Sugar is a unique problem in the American diet. Added sweeteners are all around us, including in many food products that you may not consider sweet. These sweeteners are highly caloric and can trick your body into wanting even more food. They are the driving force behind the global diabetes and obesity epidemics, which in turn cause many other health problems, including worse Covid-19 outcomes.
A focused effort to reduce sugar consumption can have big benefits — and doesn’t need to leave you grumpily hungry. Among the strategies: Read supermarket labels. Don’t let breakfast become a thinly veiled dessert. Eliminate soda from your diet, especially regular soda.
(Here’s a longer guide to eating less sugar, happily.)
Food rituals don’t need to involve junk food. “Over time, we can develop a number of habit loops that trigger us to eat when we’re bored, angry, stressed, tired after work or even just watching television,” Tara writes in her new guide to mindful eating.
Those triggers are part of human nature. But they are not really about the specific food or drinks. You can alter your rituals — after work, during an afternoon break, in front of the TV — so that they involve healthier food and drinks, like tea, coffee, popcorn, nuts, fruit or even a foamy nonalcoholic I.P.A.