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The answer to both lies in one word: satiety. It’s a concept that we don’t use much in everyday life but that we’ve all experienced at some point. It describes the sensation of having had enough and not wanting any more.

The primary reason we have gained weight at a pace unprecedented in human history is that our diets have radically changed in ways that have deeply undermined our ability to feel sated

The evidence is clear that the kind of food my father grew up eating quickly makes you feel full. But the kind of food I grew up eating, much of which is made in factories, often with artificial chemicals, left me feeling empty and as if I had a hole in my stomach

In a recent study of what American children eat, ultraprocessed food was found to make up 67 percent of their daily diet. This kind of food makes you want to eat more and more. Satiety comes late, if at all.

After he moved in 2000 to the United States in his 20s, he gained 30 pounds in two years. He began to wonder if the American diet has some kind of strange effect on our brains and our cravings, so he designed an experiment to test it.

He and his colleague Paul Johnson raised a group of rats in a cage and gave them an abundant supply of healthy, balanced rat chow made out of the kind of food rats had been eating for a very long time. The rats would eat it when they were hungry, and then they seemed to feel sated and stopped. They did not become fat.

then Dr. Kenny and his colleague exposed the rats to an American diet: fried bacon, Snickers bars, cheesecake and other treats. They went crazy for it. The rats would hurl themselves into the cheesecake, gorge themselves and emerge with their faces and whiskers totally slicked with it. They quickly lost almost all interest in the healthy food, and the restraint they used to show around healthy food disappeared. Within six weeks, their obesity rates soared.

They took all the processed food away and gave the rats their old healthy diet. Dr. Kenny was confident that they would eat more of it, proving that processed food had expanded their appetites. But something stranger happened. It was as though the rats no longer recognized healthy food as food at all, and they barely ate it. Only when they were starving did they reluctantly start to consume it again.

Drugs like Ozempic work precisely by making us feel full.

processed and ultraprocessed food create a raging hole of hunger, and these treatments can repair that hole

the drugs are “an artificial solution to an artificial problem.”

Yet we have reacted to this crisis largely caused by the food industry as if it were caused only by individual moral dereliction

Why do we turn our anger inward and not outward at the main cause of the crisis? And by extension, why do we seek to shame people taking Ozempic but not those who, say, take drugs to lower their blood pressure?

The first is the belief that obesity is a sin.

The second idea is that we are all in a competition when it comes to weight. Ours is a society full of people fighting against the forces in our food that are making us fatter.

Looked at in this way, people on Ozempic can resemble cyclists like Lance Armstrong who used performance-enhancing drugs.

We can’t find our way to a sane, nontoxic conversation about obesity or Ozempic until we bring these rarely spoken thoughts into the open and reckon with them

remember the competition isn’t between you and your neighbor who’s on weight-loss drugs. It’s between you and a food industry constantly designing new ways to undermine your satiety.

Reducing or reversing obesity hugely boosts health, on average: We know from years of studying bariatric surgery that it slashes the risks of cancer, heart disease and diabetes-related death. Early indications are that the new anti-obesity drugs are moving people in a similar radically healthier direction,

But these drugs may increase the risk for thyroid cancer.

Do we want these weight loss drugs to be another opportunity to tear one another down? Or do we want to realize that the food industry has profoundly altered the appetites of us all — leaving us trapped in the same cage, scrambling to find a way out?

When the pandemic took hold in early 2020, air travel plummeted, and many aviation executives believed it would take years for passengers to return in large numbers. Boeing began to cut jobs and encouraged workers to take buyouts or retire early. It ultimately lost about 19,000 employees companywide — including some with decades of experience.

Current and former Boeing employees, most of whom spoke on the condition of anonymity because they were not authorized to speak to reporters and feared retaliation, offered examples of how quality has suffered over the years. Many said they still respected the company and its employees and wanted Boeing to succeed.

“For years, we prioritized the movement of the airplane through the factory over getting it done right, and that’s got to change,” Brian West, the company’s chief financial officer, said at an investor conference last week.

In late 2022, Boeing lost veteran engineers who retired to lock in bigger monthly pension payments, which were tied to interest rates, according to the union that represents them,

“We warned Boeing that it was going to lose a mountain of expertise, and we proposed some workarounds, but the company blew us off,” Ray Goforth, executive director of the union, said in a statement, adding that he thought the company used the retirements as an opportunity to cut costs by replacing veteran workers with “lower-paid entry-level engineers and technical workers.”

the International Association of Machinists and Aerospace Workers union, which represents more than 30,000 Boeing employees, said the average tenure of its members had dropped sharply in recent years. The proportion of its members who have less than six years of experience has roughly doubled to 50 percent from 25 percent before the pandemic.

The result is that less energy is being produced overall, and Germany is loath to buy it from France—where power is much cleaner, because it’s mostly nuclear.

So who absorbed the adjustment? Easy: industry, the old backbone of the German manufacturing state, which has been closing production facilities in significant numbers.

This does not, of course, reduce the overall atmospheric pollution generated in the world, as the old clients of German firms turn to alternatives in other locations that are, almost always, fueled with high carbon sources. The Indonesian, Brazilian, Indian and Chinese companies that will now manufacture the products that German workers used to make are largely run on fossil fuels.

Part of the problem is that there are inherent technical limitations to how high a country can drive wind and solar in its energy mix. State of the art lithium-ion batteries can only store energy in the range of megawatts, up to the low gigawatts. In order to store electricity to survive a German winter with next to no sunlight and long low-wind periods, the country would need to increase its storage capacity by orders of magnitude.

There are only three presently known energy sources that can be used at scale to balance a natural grid: hydroelectricity, nuclear and fossil fuels

hey decided to simply make do with less power: economic degrowth in action. Of course, people depended on those power sources for jobs: good, well-paid, stable union jobs that guys without university degrees could get. The government closed down the factories—can they really be surprised some of these people now want to vote for the far right?

Germany didn’t adopt degrowth by choice, but through a series of blunders. The comic edge of its misfortunes is that so many of them occurred because of miscalculation or just sheer bloody-mindedness on the part of the Greens and Social Democrats. First, a few months before becoming a Russian energy lobbyist in 2005, then-Chancellor Gerhard Schröder insisted on putting Russian natural gas at the core of Germany’s energy grid, continuing a Social Democratic tradition of entwining Germany’s future with Russia’s. Then, a Green Party with its roots in 1970s anti-nuclear weapons activism carried this atavistic policy into the 21st century when it entered government, insisting that Germany decommission the backbone of its zero-emission energy matrix. Then the war in Ukraine happened, and the pipelines were cut. Oooops. Guess who’s digging for coal now?

As a young State Department policy planner in the 2000s, she was a lonely voice in Washington raising the alarm about the rise of China. She pushed for tariffs and against trade agreements before it was cool, and was an author of a book called “War by Other Means” about how blind faith in free markets put the United States at a geopolitical disadvantage. For years, she felt like an oddball in Washington, where both parties were still in thrall to neoliberalism.

The Hewlett Foundation hired her as the head of an initiative that has given away $140 million so far to people who are devising a new economic philosophy. Then she served a stint in the White House. Today, she’s an intellectual leader of a growing, bipartisan consensus

She fell in love with economics and studied it at Wake Forest. After she joined a student delegation to a NATO summit in Prague in 2002, a faculty adviser on that trip offered her a job in Washington working at the National Intelligence Council. In those early years, she believed what everyone else in Washington believed about the economy — that governments ought not meddle with it.

if Mr. Trump correctly identified a problem — “China is eating our lunch” — he did not solve it, beyond putting tariffs on Chinese products. His tax cut for the rich hurt rather than helped matters.

It’s the Biden administration that came in with a plan to build an economy that was good for workers, not just shareholders, using some strategies Ms. Harris had been talking about for years.

The thinking behind it goes like this: Unquestioning belief in the free market created a globalism that funneled money to the 1 percent, which has used its wealth to amass political power at the expense of everyone else. It produced free trade agreements that sent too many U.S. factories to China and rescue plans after the 2008 financial crisis that bailed out Wall Street instead of Main Street.

It was her job to track China’s use of subsidies, industrial espionage and currency manipulation to fuel its rise as a manufacturing powerhouse. Ms. Harris argued that tariffs on China were a necessary defense. Nobody agreed. “I was kind of just banging my head against this wall,” she told me. “The wall was a foreign policy establishment that saw markets as sacrosanct.”

Barack Obama campaigned on a pledge to renegotiate NAFTA, but he struck up a new trade deal instead — the Trans-Pacific Partnership. Ms. Harris argued against it. “We didn’t have the foggiest idea” of what it would do to our economy, she told me. Nobody listened.

it sent Democrats back to the intellectual drawing board. Larry Kramer, then the president of the Hewlett Foundation, recruited her in 2018 to promote alternatives to ideas that had guided U.S. policy for decades. He hoped she could do for free-market skepticism what Milton Friedman and his allies had done for free-market fundamentalism, which became policy under the Reagan administration and eventually was embraced by both parties as truth.

She has since rejoined the Hewlett Foundation, where she funds people who are proposing new solutions to economic problems. One grantee, the conservative think tank American Compass, promotes the idea of a domestic development bank to fund infrastructure — an idea with bipartisan appeal.

But the work that Ms. Harris and others in the Biden administration have done is unfinished, and poorly understood. The terms “Bidenomics” and “Build Back Better” don’t seem to resonate

Ms. Harris acknowledges that these ideas haven’t yet taken hold in the broader electorate, and that high interest rates overshadow the progress that’s been made. It’s too early for voters to feel it, she told me: “The investments Biden has pushed through aren’t going to be felt in a month, a year, two years.”

she celebrates the fact that leaders across the political spectrum are embracing the idea that Americans need to “get back to building things in this country.” This election has no candidates blindly promoting the free market. The last one didn’t either. In the battle of ideas, she has already won.