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How to go vegan in South Korea, a meat lover’s paradise

News Feed
Monday, March 18, 2024

SEOUL — Some places call it “plant-based.” Others say “reducetarian” or “flexitarian.” The veg-curious might introduce “Meatless Mondays.” But here in South Korea, some are simply aiming for “no chunk”: Cut down on your meat consumption by avoiding obvious bits of meat but turning a blind eye to what’s less visible.Across the developed world, as people become more conscious of the meat industry’s relatively large carbon footprint, there are movements aimed at reducing the consumption of animal products, if not becoming outright vegan.That effort is particularly tricky in South Korea, where meat is associated with wealth and health, and where tabletop barbecuing is a way of life.“I tried my best, even setting a cute photo of pigs as my phone wallpaper,” said Jung Jin-a, a committed animal rights activist who has been struggling to give up meat for more than a decade.She wanted to save the planet and the animals. But she wanted sizzling pork belly, too.“The pork and chicken are right in front of my eyes and will immediately satisfy my cravings, whereas the values I uphold by refusing meat are invisible,” said Jung, who wrote a book about her life as an “imperfect vegetarian.”After K-pop and K-dramas, K-BBQ may well be South Korea’s best-known cultural export. The Korean method of grilling meat is beloved by diners around the world, and attracts foodie tourists. Korean food has risen as one of the most popular cuisines on TikTok and Instagram, according to a 2023 analysis of social media tags.The Oscar-winning film “Parasite” featured grilled Korean beef with instant noodles, fueling a social media frenzy.At home, it’s a national pastime, whether at an after-work gathering or a picnic dinner on a portable grill.Meat has always been an aspirational meal here. It was a luxury during South Korea’s emergence from colonization and war, but after decades of rapid economic growth, meat has now taken over Korean dinner tables.South Korea’s annual meat intake per person exceeded that of rice for the first time in 2022. It’s now 134 pounds — much lower than the annual American per capita meat consumption of 225 pounds, but up from 69 pounds two decades ago.Now, it’s rare to walk more than two blocks in central Seoul at 7 p.m. without inhaling the aroma of grilled meat. This country of 51 million has more than 70,000 barbecue restaurants.But some climate change activists and animal rights advocates are coming up with creative ways to question this ubiquitous carnivore culture and embrace plant-based eating.One of the biggest challenges for aspiring vegetarians and vegans in South Korea is that they don’t know where to start.Meat and seafood appear in some form in nearly every meal: small and sometimes incognito ingredients like tiny fermented shrimp in kimchi; minced meat in bibimbap; or seafood stock in sizzling tofu soup.Given the pervasiveness of animal products in dishes, and a lack of awareness of vegetarian needs, it can be tricky to go meat-free at restaurants or when communally dining.These difficulties have given rise to the “bideong,” or “no-chunk,” approach to plant-based eating among budding vegetarians in South Korea.For Jang Kyung-mi, bideong means making her “best effort to avoid visible chunks of meat when circumstances do not allow” eating vegetarian, especially when dining out or sharing a meal with omnivores. This approach has helped her avoid awkward questions at restaurants, like asking whether the broth is from seafood or meat stock.A strict vegan diet, which was her initial goal three years ago, was hard to practice while living with a non-vegetarian husband and child. “We tend to be preoccupied with the extremes when going meat-free,” said the 38-year-old, who runs a zero-waste shop outside Seoul. “However, a realistic diet that we can actually sustain is more effective and meaningful.”The “no chunk” lifestyle is an example of a big-tent approach to plant-based eating, and its accessible nature is fueling a move away from a meat-centered diet.While just 4 percent of South Korean adults identify as vegetarians — many of them devout Buddhists, who avoid eating meat and strong-smelling plants as part of their practice — 12 percent say they are flexitarians who follow a plant-centric diet, according to a survey last year by Hankook Research, a Seoul-based pollster.On social media, the hashtag “my veganism diary” has become popular, amplifying the voices of those trying to go meat-free and influencing a new generation of plant-centric eaters. On Instagram, South Koreans share their experience of attempting — and sometimes succeeding, but often failing — to eat vegan, and encourage others to join the challenge.The social media trend has been a source of motivation for South Korean illustrator Kim Bo-sun. She started posting a series called “My Veganism Cartoon” on social media, in which she playfully depicts the ups and downs in her life as an “aspiring vegan.”“I started working on these cartoons in hopes that it would inspire more imperfect vegans like myself,” she said. “I think 100 imperfect aspiring vegans are more valuable for our planet than a single perfect vegan.”Experts say this less puritanical and more flexible approach could lower the barriers to a plant-based diet. “In an era of urgent climate risk, convincing people to cut down meat consumption even just on a part-time basis is important,” said Oh Choong-hyeon, an environmental science expert at Dongguk University in Seoul.South Koreans’ big appetite for meat is “neither sustainable nor responsible,” he said.The country’s economy has grown to become the world’s 13th-largest, and it is the 10th-biggest carbon polluter across the globe, according to the Global Carbon Atlas. This is because it remains dependent on heavy industry such as petrochemicals, steel and automobiles. The energy and industrial sectors are responsible for two-thirds of total emissions, followed by the transport, building and agriculture sectors.The Asian economic powerhouse is one of the lowest performers in the Climate Change Performance Index, which assesses the national greenhouse gas emissions, energy mix and climate policy of 63 countries and the European Union.South Korea’s topography means that livestock is often raised in crowded factory farms, which contributes to air and water pollution, said Park Jong-moo, a bioethics expert and veterinarian.Some companies see a huge potential market in alternative protein sources — although they concede that selling to meat-loving Koreans is no easy feat.“Our products are delicious enough to win over not only vegetarians but also non-vegetarians who have never tried alternative meat,” said Kim Yang-hee, CEO of HN Novatech, a Korean food-tech start-up that developed the world’s first seaweed ingredient for plant-based meat alternatives.While seaweed remains an unfamiliar ingredient in Western countries, it has been a staple of Korean and Japanese diets for hundreds of years.Kim Yang-hee said her company’s seaweed extract makes an “accurate meat” flavor without additives or preservatives often present in plant-based meat products. Seaweed farming, which uses only the sea, has the potential to redefine the future of protein production in an eco-friendly way, the company says. It recently launched a “meat-flavored” croquette and plans to follow up with plant-based mackerel, milk substitute from seaweed extract, and seaweed “beef” jerky.The government is taking notice. The Agriculture Ministry recently unveiled a plan to support the plant-based economy by establishing a dedicated studies center for plant-based meat alternatives and increasing the exportability of the products.The country’s plant-based protein market could reach $216 million by 2026, according to estimates by the Korea Rural Economic Institute.But there are still far more skeptics than proponents. “Saturday night means going out for pork belly and soju with friends,” said Philip Lee, a Seoul-based soccer coach who eats barbecue every weekend. Lee says he is aware of vegetarianism and supports the movement, “but I cannot see myself ever giving up meat.”Joo Seon-tea, a professor of animal science at South Korea’s Gyeongsang National University, said South Koreans have grown “taller, healthier and happier” thanks to rising meat intake over the decades.Joo says eating meat every day is an ideal dietary habit that contributes to a balanced diet. His vegetarian daughter once took him to a vegan restaurant where Joo tried soy meat for the first time. “It is incomprehensible to me why anyone would want to eat fake meat,” he said. “Can’t you just eat normally?”

Tabletop grilling is a way of life in South Korea, where meat is associated with wealth and health. But a growing number of the vegan-curious are trying to reduce their intake.

SEOUL — Some places call it “plant-based.” Others say “reducetarian” or “flexitarian.” The veg-curious might introduce “Meatless Mondays.” But here in South Korea, some are simply aiming for “no chunk”: Cut down on your meat consumption by avoiding obvious bits of meat but turning a blind eye to what’s less visible.

Across the developed world, as people become more conscious of the meat industry’s relatively large carbon footprint, there are movements aimed at reducing the consumption of animal products, if not becoming outright vegan.

That effort is particularly tricky in South Korea, where meat is associated with wealth and health, and where tabletop barbecuing is a way of life.

“I tried my best, even setting a cute photo of pigs as my phone wallpaper,” said Jung Jin-a, a committed animal rights activist who has been struggling to give up meat for more than a decade.

She wanted to save the planet and the animals. But she wanted sizzling pork belly, too.

“The pork and chicken are right in front of my eyes and will immediately satisfy my cravings, whereas the values I uphold by refusing meat are invisible,” said Jung, who wrote a book about her life as an “imperfect vegetarian.”

After K-pop and K-dramas, K-BBQ may well be South Korea’s best-known cultural export. The Korean method of grilling meat is beloved by diners around the world, and attracts foodie tourists. Korean food has risen as one of the most popular cuisines on TikTok and Instagram, according to a 2023 analysis of social media tags.

The Oscar-winning film “Parasite” featured grilled Korean beef with instant noodles, fueling a social media frenzy.

At home, it’s a national pastime, whether at an after-work gathering or a picnic dinner on a portable grill.

Meat has always been an aspirational meal here. It was a luxury during South Korea’s emergence from colonization and war, but after decades of rapid economic growth, meat has now taken over Korean dinner tables.

South Korea’s annual meat intake per person exceeded that of rice for the first time in 2022. It’s now 134 pounds — much lower than the annual American per capita meat consumption of 225 pounds, but up from 69 pounds two decades ago.

Now, it’s rare to walk more than two blocks in central Seoul at 7 p.m. without inhaling the aroma of grilled meat. This country of 51 million has more than 70,000 barbecue restaurants.

But some climate change activists and animal rights advocates are coming up with creative ways to question this ubiquitous carnivore culture and embrace plant-based eating.

One of the biggest challenges for aspiring vegetarians and vegans in South Korea is that they don’t know where to start.

Meat and seafood appear in some form in nearly every meal: small and sometimes incognito ingredients like tiny fermented shrimp in kimchi; minced meat in bibimbap; or seafood stock in sizzling tofu soup.

Given the pervasiveness of animal products in dishes, and a lack of awareness of vegetarian needs, it can be tricky to go meat-free at restaurants or when communally dining.

These difficulties have given rise to the “bideong,” or “no-chunk,” approach to plant-based eating among budding vegetarians in South Korea.

For Jang Kyung-mi, bideong means making her “best effort to avoid visible chunks of meat when circumstances do not allow” eating vegetarian, especially when dining out or sharing a meal with omnivores. This approach has helped her avoid awkward questions at restaurants, like asking whether the broth is from seafood or meat stock.

A strict vegan diet, which was her initial goal three years ago, was hard to practice while living with a non-vegetarian husband and child. “We tend to be preoccupied with the extremes when going meat-free,” said the 38-year-old, who runs a zero-waste shop outside Seoul. “However, a realistic diet that we can actually sustain is more effective and meaningful.”

The “no chunk” lifestyle is an example of a big-tent approach to plant-based eating, and its accessible nature is fueling a move away from a meat-centered diet.

While just 4 percent of South Korean adults identify as vegetarians — many of them devout Buddhists, who avoid eating meat and strong-smelling plants as part of their practice — 12 percent say they are flexitarians who follow a plant-centric diet, according to a survey last year by Hankook Research, a Seoul-based pollster.

On social media, the hashtag “my veganism diary” has become popular, amplifying the voices of those trying to go meat-free and influencing a new generation of plant-centric eaters. On Instagram, South Koreans share their experience of attempting — and sometimes succeeding, but often failing — to eat vegan, and encourage others to join the challenge.

The social media trend has been a source of motivation for South Korean illustrator Kim Bo-sun. She started posting a series called “My Veganism Cartoon” on social media, in which she playfully depicts the ups and downs in her life as an “aspiring vegan.”

“I started working on these cartoons in hopes that it would inspire more imperfect vegans like myself,” she said. “I think 100 imperfect aspiring vegans are more valuable for our planet than a single perfect vegan.”

Experts say this less puritanical and more flexible approach could lower the barriers to a plant-based diet. “In an era of urgent climate risk, convincing people to cut down meat consumption even just on a part-time basis is important,” said Oh Choong-hyeon, an environmental science expert at Dongguk University in Seoul.

South Koreans’ big appetite for meat is “neither sustainable nor responsible,” he said.

The country’s economy has grown to become the world’s 13th-largest, and it is the 10th-biggest carbon polluter across the globe, according to the Global Carbon Atlas. This is because it remains dependent on heavy industry such as petrochemicals, steel and automobiles. The energy and industrial sectors are responsible for two-thirds of total emissions, followed by the transport, building and agriculture sectors.

The Asian economic powerhouse is one of the lowest performers in the Climate Change Performance Index, which assesses the national greenhouse gas emissions, energy mix and climate policy of 63 countries and the European Union.

South Korea’s topography means that livestock is often raised in crowded factory farms, which contributes to air and water pollution, said Park Jong-moo, a bioethics expert and veterinarian.

Some companies see a huge potential market in alternative protein sources — although they concede that selling to meat-loving Koreans is no easy feat.

“Our products are delicious enough to win over not only vegetarians but also non-vegetarians who have never tried alternative meat,” said Kim Yang-hee, CEO of HN Novatech, a Korean food-tech start-up that developed the world’s first seaweed ingredient for plant-based meat alternatives.

While seaweed remains an unfamiliar ingredient in Western countries, it has been a staple of Korean and Japanese diets for hundreds of years.

Kim Yang-hee said her company’s seaweed extract makes an “accurate meat” flavor without additives or preservatives often present in plant-based meat products. Seaweed farming, which uses only the sea, has the potential to redefine the future of protein production in an eco-friendly way, the company says. It recently launched a “meat-flavored” croquette and plans to follow up with plant-based mackerel, milk substitute from seaweed extract, and seaweed “beef” jerky.

The government is taking notice. The Agriculture Ministry recently unveiled a plan to support the plant-based economy by establishing a dedicated studies center for plant-based meat alternatives and increasing the exportability of the products.

The country’s plant-based protein market could reach $216 million by 2026, according to estimates by the Korea Rural Economic Institute.

But there are still far more skeptics than proponents. “Saturday night means going out for pork belly and soju with friends,” said Philip Lee, a Seoul-based soccer coach who eats barbecue every weekend. Lee says he is aware of vegetarianism and supports the movement, “but I cannot see myself ever giving up meat.”

Joo Seon-tea, a professor of animal science at South Korea’s Gyeongsang National University, said South Koreans have grown “taller, healthier and happier” thanks to rising meat intake over the decades.

Joo says eating meat every day is an ideal dietary habit that contributes to a balanced diet. His vegetarian daughter once took him to a vegan restaurant where Joo tried soy meat for the first time. “It is incomprehensible to me why anyone would want to eat fake meat,” he said. “Can’t you just eat normally?”

Read the full story here.
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The Pregnancy Pill Millions Trust Faces Alarming New Questions About Child Brain Health

Scientists are warning that one of the most trusted painkillers used in pregnancy may not be as safe as once believed. A sweeping review of studies finds links between prenatal acetaminophen exposure and higher risks of autism and ADHD in children. The medication crosses the placenta and may interfere with brain development, raising urgent questions [...]

New research raises red flags about acetaminophen use in pregnancy, linking it to autism and ADHD risks in children. ShutterstockScientists are warning that one of the most trusted painkillers used in pregnancy may not be as safe as once believed. A sweeping review of studies finds links between prenatal acetaminophen exposure and higher risks of autism and ADHD in children. The medication crosses the placenta and may interfere with brain development, raising urgent questions about clinical guidelines. Acetaminophen in Pregnancy Linked to Neurodevelopmental Risks Scientists at the Icahn School of Medicine at Mount Sinai report that children exposed to acetaminophen before birth may face a greater chance of developing neurodevelopmental conditions such as autism spectrum disorder and attention-deficit/hyperactivity disorder (ADHD). Their findings, published in BMC Environmental Health, mark the first time that the Navigation Guide methodology has been applied to thoroughly assess the quality and reliability of the research on this subject. Acetaminophen (commonly sold as Tylenol® in the United States and Canada, and known as paracetamol elsewhere) is the most widely used non-prescription treatment for pain and fever during pregnancy, taken by more than half of expectant mothers worldwide. For decades, it has been viewed as the safest option for relief from headaches, fever, and general pain. However, the Mount Sinai team’s review of 46 studies, which together involved over 100,000 participants from multiple countries, challenges this long-standing belief and highlights the importance of caution and additional investigation. Gold-Standard Review Methodology Applied The research team relied on the Navigation Guide Systematic Review, a leading framework used in environmental health. This method enables scientists to systematically evaluate each study, rating potential sources of bias such as incomplete data or selective reporting, while also weighing the overall strength and consistency of the evidence. “Our findings show that higher-quality studies are more likely to show a link between prenatal acetaminophen exposure and increased risks of autism and ADHD,” said Diddier Prada, MD, PhD, Assistant Professor of Population Health Science and Policy, and Environmental Medicine and Climate Science, at the Icahn School of Medicine at Mount Sinai. “Given the widespread use of this medication, even a small increase in risk could have major public health implications.” Possible Biological Mechanisms Behind the Link The paper also explores biological mechanisms that could explain the association between acetaminophen use and these disorders. Acetaminophen is known to cross the placental barrier and may trigger oxidative stress, disrupt hormones, and cause epigenetic changes that interfere with fetal brain development. While the study does not show that acetaminophen directly causes neurodevelopmental disorders, the research team’s findings strengthen the evidence for a connection and raise concerns about current clinical practices. Call for Updated Guidelines and Safer Alternatives The researchers call for cautious, time-limited use of acetaminophen during pregnancy under medical supervision; updated clinical guidelines to better balance the benefits and risks; and further research to confirm these findings and identify safer alternatives for managing pain and fever in expectant mothers. “Pregnant women should not stop taking medication without consulting their doctors,” Dr. Prada emphasized. “Untreated pain or fever can also harm the baby. Our study highlights the importance of discussing the safest approach with health care providers and considering non-drug options whenever possible.” Rising Autism and ADHD Rates Add Urgency With diagnoses of autism and ADHD increasing worldwide, these findings have significant implications for public health policy, clinical guidelines, and patient education. The study also highlights the urgent need for pharmaceutical innovation to provide safer alternatives for pregnant women. Reference: “Evaluation of the evidence on acetaminophen use and neurodevelopmental disorders using the Navigation Guide methodology” by Diddier Prada, Beate Ritz, Ann Z. Bauer and Andrea A. Baccarelli, 14 August 2025, Environmental Health.DOI: 10.1186/s12940-025-01208-0 The study was conducted in collaboration with the University of California, Los Angeles; University of Massachusetts Lowell; and Harvard T.H. Chan School of Public Health. Funding for this study was provided by the National Cancer Institute (U54CA267776), the National Institute of Environmental Health Sciences (R35ES031688), and the National Institute on Aging (U01AG088684). Important: These findings indicate a correlation, not definitive proof of causation. The medical community remains divided, and further research is needed. Always seek guidance from your healthcare professional before altering or discontinuing any treatment. Never miss a breakthrough: Join the SciTechDaily newsletter.Follow us on Google, Discover, and News.

Farm Workers At Risk For Kidney Disease

By Dennis Thompson HealthDay ReporterTHURSDAY, Oct. 2, 2025 (HealthDay News) — Farm workers have a higher risk for kidney disease, mainly due to...

By Dennis Thompson HealthDay ReporterTHURSDAY, Oct. 2, 2025 (HealthDay News) — Farm workers have a higher risk for kidney disease, mainly due to exposure to high heat and agricultural chemicals, a new small-scale study says.Workers on a grape farm near the Arizona-Sonora border had high levels of arsenic, cadmium and chromium in their urine, and those were linked to increased signs of kidney injury, according to findings published in the November issue of the journal Environmental Research.“We’re seeing an increase in kidney disease in young people who lack typical risk factors, especially in hotter regions,” said lead researcher Rietta Wagoner, a postdoctoral scholar at the University of Arizona.“There is evidence that heat, pesticides and metal exposures each play a role, and especially that heat is making potentially toxic exposures worse,” she said in a news release. “Each individually has been studied, but little research has examined a combination of factors. This study is an attempt to answer questions." For the study, researchers followed 77 farm workers who traveled seasonally from southern Mexico to work the grape farm. The workers arrived in February and March, at the beginning of the grape season, and stayed until the end of summer.The team collected daily urine and blood samples from the workers, and measured their heat stress twice a day with inner ear temperatures and heart rates.The worker’s kidney function generally decreased during the season, based on estimates derived from blood and urine samples.This decline was linked to chemicals found in pesticides and fertilizers, as well as the excessive summer heat in the Sonoran Desert, where air temperatures ranged upwards of 100 degrees Fahrenheit, researchers said.“When we looked at heat in combination with metals and metalloids, we found heat especially exacerbated the effects of the metals arsenic and cadmium on the kidney,” Wagoner said. “In other words, together, the effects were worse.”This kidney damage can be prevented, she said.“We recommend mandatory periodic breaks and rest built into the workday,” Wagoner said. “Provide water, electrolyte replacement and have restrooms nearby. Also, allow the workers time to get used to the conditions.”It’s also important to get to the source of workers’ exposure to these toxic metals, she said, noting that workers drink well water in places where uranium and arsenic are found in the soil.“If we can implement prevention measures early on,” Wagoner said, “we can prevent longer term issues.”SOURCES: University of Arizona, news release, Sept. 23, 2025; Environmental Research, November 2025What This Means For YouFarm workers should make sure to take frequent rest breaks during hot days and stay hydrated.Copyright © 2025 HealthDay. All rights reserved.

Giant Sinkhole in Chilean Mining Town Haunts Residents, Three Years On

TIERRA AMARILLA (Reuters) -Residents in the mining town of Tierra Amarilla in the Chilean desert are hopeful that a new court ruling will allay...

TIERRA AMARILLA (Reuters) -Residents in the mining town of Tierra Amarilla in the Chilean desert are hopeful that a new court ruling will allay their fears about a giant sinkhole that opened near their homes more than three years ago and remains unfilled.A Chilean environmental court this month ordered Minera Ojos del Salado, owned by Canada's Lundin Mining, to repair environmental damage related to activity at its Alcaparrosa copper mine, which is thought to have triggered the sinkhole that appeared in 2022.The ruling calls on the company to protect the region's water supply and refill the sinkhole. The cylindrical crater originally measured 64 meters (210 ft) deep and 32 meters (105 ft) wide at the surface.That has provided a small measure of relief to those in arid Tierra Amarilla in Chile's central Atacama region, who fear that without remediation the gaping hole could swallow up more land."Ever since the sinkhole occurred ... we've lived in fear," said Rudy Alfaro, whose home is 800 meters from the site. A health center and preschool are nearby too, she said."We were afraid it would get bigger, that it would expand, move toward the houses." The sinkhole expelled clouds of dust in a recent earthquake, provoking more anxiety, she said.     The court upheld a shutdown of the small Alcaparrosa mine ordered by Chile's environmental regulator in January, and confirmed "irreversible" damage to an aquifer, which drained water into the mine and weakened the surrounding rock."This is detrimental to an area that is already hydrologically stressed," said Rodrigo Saez, regional water director. Lundin said it will work with authorities to implement remediation measures.(Writing by Daina Beth Solomon, Editing by Rosalba O'Brien)Copyright 2025 Thomson Reuters.

Scientists Warn: Bottled Water May Pose Serious Long-Term Health Risks

Using it regularly introduces tens of thousands of microplastic and nanoplastic particles into the body each year. The tropical beauty of Thailand’s Phi Phi islands is not the kind of place where most PhD journeys begin. For Sarah Sajedi, however, it was not the beaches themselves but what lay beneath them that sparked her decision [...]

A scientist’s island epiphany uncovers how single-use bottles shed micro- and nanoplastics that infiltrate the body, with emerging evidence of chronic harm and measurement blind spots. Credit: ShutterstockUsing it regularly introduces tens of thousands of microplastic and nanoplastic particles into the body each year. The tropical beauty of Thailand’s Phi Phi islands is not the kind of place where most PhD journeys begin. For Sarah Sajedi, however, it was not the beaches themselves but what lay beneath them that sparked her decision to leave a career in business and pursue academic research. “I was standing there looking out at this gorgeous view of the Andaman Sea, and then I looked down and beneath my feet were all these pieces of plastic, most of them water bottles,” she says. “I’ve always had a passion for waste reduction, but I realized that this was a problem with consumption.” Sajedi, BSc ’91, decided to return to Concordia to pursue a PhD with a focus on plastic waste. As the co-founder of ERA Environmental Management Solutions, a leading provider of environmental, health, and safety software, she brought decades of experience to compliment her studies. Her latest paper, published in the Journal of Hazardous Materials, looks at the science around the health risks posed by single-use plastic water bottles. They are serious, she says, and seriously understudied. Sarah Sajedi with Chunjiang An: “Drinking water from plastic bottles is fine in an emergency but it is not something that should be used in daily life.” Tiny threats, little known In her analysis of more than 140 scientific papers, Sajedi reports that people ingest an estimated 39,000 to 52,000 microplastic particles each year. For those who rely on bottled water, that number climbs even higher—about 90,000 additional particles compared to individuals who primarily drink tap water. These particles are invisible to the eye. Microplastics range in size from one micron (a thousandth of a millimeter) to five millimeters, while nanoplastics are smaller than a single micron. They are released as plastic bottles are manufactured, stored, transported, and gradually degrade. Because many bottles are made from low-grade plastic, they shed particles whenever they are handled or exposed to sunlight and changes in temperature. Unlike plastics that move through the food chain before entering the human body, these are consumed directly from the container itself. Sarah Sajedi and Chunjiang An. Credit: Concordia UniversityAccording to Sajedi, the health risks are significant. Once inside the body, these small plastics can pass through biological barriers, enter the bloodstream, and reach major organs. Their presence may contribute to chronic inflammation, cellular oxidative stress, hormone disruption, reproductive issues, neurological damage, and some cancers. Still, their long-term impacts are not fully understood, largely because of limited testing and the absence of standardized ways to measure and track them. Sajedi also outlines the range of methods available to detect nano- and microplastics, each with benefits and limitations. Some approaches can locate particles at extremely small scales but cannot reveal their chemical makeup. Others identify the material composition but overlook the tiniest plastics. The most sophisticated and dependable tools are often prohibitively expensive and not widely accessible. Education is the best prevention Sajedi is encouraged by the legislative action that has been adopted by governments around the world aimed at limiting plastic waste. However, she notes that the most common targets are single-use plastic bags, straws, and packaging. Very few address the pressing issue of single-use water bottles. “Education is the most important action we can take,” she says. “Drinking water from plastic bottles is fine in an emergency but it is not something that should be used in daily life. People need to understand that the issue is not acute toxicity—it is chronic toxicity.” Reference: “Unveiling the hidden chronic health risks of nano- and microplastics in single-use plastic water bottles: A review” by Sarah Sajedi, Chunjiang An and Zhi Chen, 14 June 2025, Journal of Hazardous Materials.DOI: 10.1016/j.jhazmat.2025.138948 Funding: Natural Sciences and Engineering Research Council of Canada Never miss a breakthrough: Join the SciTechDaily newsletter.Follow us on Google, Discover, and News.

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