World War II helped convince food companies to produce more processed foods

What Americans ate after WWII

Returning from World War II, the American cultural landscape saw a vast number of changes. Cuisine, in particular, diversified and modernized thanks to traveled soldiers and wartime innovation. From inventions like powdered cheese to the popularization of instant coffee and Chinese food, explore the changes to the American food industry that continue to influence what we consume today.

The food processing techniques developed for World War II, later repurposed for consumers

Research projects funded or sponsored by the military led to the development of active dry yeast to make bread easier to bake and an improved version of dehydrated cheese, which would be used in powdered cheese snacks. Freeze-drying, which had been used to ease the transport of blood plasma to battlefields, where it would be reconstituted with water, was later used on fruit for cereals.

Processed foods were marketed to busy wives in the 1950s

In the 1950s, they were marketed as time-saving conveniences for young families, especially those living in the rapidly expanding suburbs, who could easily find them in local supermarkets, making them a seemingly sensible alternative to fresh foods.

Why did the US make it illegal to sell sliced bread during WWII?

Pre-sliced bread has only been with us for almost 100 years, but during the course of World War II it was briefly banned to save on supplies like wax paper and stainless steel for the war effort. This Atlas Obscura article explores this amusing (though not at the time) bit of food during wartime history.

See what it was like to live in the United States during World War II

In America, life was transformed by total war: sixteen million service members left civilian life, while massive industrial production demanded labor. Women, minorities, and teens filled factories, fueling boomtown growth and breaking social barriers. Simultaneously, rationing, recycling drives, Victory Gardens, ration stamps, blackout drills, and war bond campaigns permeated daily routines.

A boom hit after WWI, with consumerism usurping frugality as an American value

When American soldiers returned home after WWI in the 1920s, they found a country ready to spend money, make a home, and indulge in creature comforts after wartime rationing. This uptick in US wealth and production led to job opportunities for advertising experts.

Learn the history of food science breakthroughs from the 20th century

Long after humans developed the means to produce sufficient food to feed civilizations, scientific research focused on a wide variety of objectives, such as developing methods to preserve food quality (accomplished via frozen food), speeding up cooking (leading to the microwave), and lowering the cost of sweetening food, which high fructose corn syrup provides.

How the Great Depression still shapes the way Americans eat

From fortified foods to nutrition labels, the legacy of an early financial crisis lives on in kitchens across the United States. Ethnic foods with their (supposedly) hunger-triggering spices were vilified and considered “stimulants” along the lines of caffeine and so, in their stead came prune puddings, canned-meat stews, and dairy-heavy vegetable casseroles featuring America’s first fortified foods. Read more here.

How World War II affects your wallet today

The world's deadliest conflict also impacted social programs extensively, including ways that still affect your money today. World War II is responsible for the practice of employers withholding tax payments and sponsoring health insurance, as well as the norm of providing school lunches for the nation's schoolchildren. Watch this brief video to learn more.

After World War II, pizza took off in the US

Pizzerias opened in cities throughout the 1920s and '30s, especially those with large Italian immigrant populations, but the cuisine didn't take off nationally until after World War II. Some credit that with American soldiers' exposure to the food while stationed in Italy; others point to the invention of the mass-produced gas-fired ovens, which made opening a pizzeria considerably easier. Below is a 1944 clip from the New York Times, the first time the paper mentioned pizza.

Health food broke into the mainstream by the 1980s

A 1984 New York Times story noted that Americans were eating less red meat than a decade prior, and that, in general, the country was “talking, thinking and worrying about what they eat to a degree unique in the nation's history.” The feature then details foods that were then considered bizarre: whole-grain muffins, hummus, and a variety of vegetarian dishes. (Some readers may experience a paywall.)

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

How Chef Boyardee fed America

Chef Boyardee wasn’t just a grocery store staple—it was once a key supplier for US troops in WWII. Founded by Italian immigrant Hector Boiardi, the company produced thousands of canned pasta rations daily.

Penicillin production was just behind the atom bomb in wartime priorities

By 1943, the US War Department made penicillin its second-highest priority—just after the Manhattan Project. Producing enough of the antibiotic for the D-Day invasion became a central mission of Allied science and industry.

Why processed foods can be so addictive

In recent years, many critics have voiced their concerns about the food industry and how ultra-processed foods affect our health. Despite our awareness of these issues, processed foods are still incredibly hard to remove from our diet. In this podcast by The Guardian, Dr. Chris van Tulleken explains how “junk food” is created to get us hooked, how it negatively affects us, and what we can do to improve our eating habits.

Saccharin was widely used in WWI when sugar was rationed

The substance was discovered by chemists in 1878, but its use became more common during World War I and also afterward as a result of sugar rationing. It had become a typical household item in the US and Europe by 1917. During World War II, the artificial sweetener again saw significant popularity.

Women's role in society expanded during the war

With millions of men at war, women managed farms and businesses, served as nurses, and organized aid efforts—broadening women's participation in public life and laying the groundwork for future suffrage movements.

During World War II, turbulence was used to make ice cream

Before a mission, bomber crews packed buckets of ice cream mix into the rear gunner's compartment. Once airborne, freezing air solidified it, and turbulence churned it smooth, so that pilots had a fresh ice cream after landing.

Exploring World War I technology on the battlefield

Industrialization brought massive changes to warfare during the Great War. Newly-invented killing machines begat novel defense mechanisms, which, in turn spurred the development of even deadlier technologies. Nearly every aspect of what we would consider modern warfare debuted on World War I battlefields. Starting with soldiers on horseback carrying lances and ending in poison gas, machine guns, and aerial battles, this gallery shows the first tools of modern warfare.

A book series aimed at World War II soldiers helped popularize works like 'The Great Gatsby' and 'Of Mice and Men.'

World War II soldiers received specially-made vinyl records

"V-Discs" were vinyl records featuring popular folk, classical, and jazz songs. This was one of the first widespread uses of vinyl, rather than shellac, records.

World War II innovations helped advance car racing

Modern American auto racing began in the 1920s with bootleggers modifying cars to outrun authorities. World War II innovations like better engines and surplus parts fueled post-war racing. By 1947, Bill France Sr. founded NASCAR, creating a unified league with consistent rules, transforming stock car racing into one of America’s favorite sports.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

Germany’s invasion of Poland in 1939 launched World War II

On September 1, 1939, Nazi Germany launched a surprise invasion of Poland using blitzkrieg—coordinated air bombardments and armored assaults—to overwhelm Polish defenses within weeks. This lightning-strike strategy shocked the world and signaled both the start of World War II and a revolutionary shift in modern military tactics.

Henry Ford built a plastic car from soybeans in 1941

To pursue his goal of marrying industry with agriculture, among other reasons, the automobile giant oversaw the design and creation of a vehicle with 12 panels made from plastic. At 2,000 pounds, the car was much lighter than all-steel ones, but production stopped during World War II.

Commercial air travel's early days: Flights were short, cold, depressurized, and generally comfortable

After World War II, airlines competed for their high-end passengers by offering cocktails, meals, and plush seats, cultivating the image of the elite "Jet Set." By the 1960s, air transport was completely changing global trade and offering big profits to companies able to ship via plane.

The Russia-Ukraine war greatly affected the global food supply

Russia's invasion devastated Ukraine's agricultural sector, destroying farms, ports, and grain infrastructure and causing over $40B in losses. Disrupted exports fueled global food insecurity, while Moscow leveraged its grain exports to expand influence across the Global South.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

See the most iconic photos from four decades of LIFE magazine

The power and influence of the American presidency have expanded significantly over time—far beyond what the founders envisioned.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Hookworm infection, though risky, may help fight certain autoimmune conditions by tamping down the immune system's inflammatory response.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

One disco producer saw 'Star Wars' four times on its opening weekend and was so inspired that he recorded the album 'Star Wars and Other Intergalactic Funk,' which produced a chart-topping single.

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in casualties, forces mobilized, and displacement of civilians.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Volcanic activity may have triggered the Black Death by spewing gases that led to crop failures in Europe, thus forcing the import of grain ships with plague-infested fleas.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Fireworks make a loud booming sound after exploding due to air expanding faster than the speed of sound.

To reduce wrinkles in clothing, research recommends gentle wash cycles with more water and tumble drying with smaller loads and longer times.