Health
Bottled water found to contain tens of thousands of ‘tiny plastic particles’ in new study
People who drink bottled water may be getting more than just hydration, some researchers claim.
A new study published in the journal Proceedings of the National Academy of Sciences found that each bottle of water can contain hundreds of thousands of nanoplastics, which are tiny particles of plastic below 1 micrometer, measured in billionths of a meter.
Researchers from Columbia University Lamont-Doherty Earth Observatory, Columbia University, and Columbia Mailman School of Public Health in New York found that each liter of water contained around 240,000 of these plastic fragments, much higher than previously thought.
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Because nanoplastics are so tiny, the concern is that they could make their way into people’s bloodstreams and organs and potentially enter individual cells, the researchers cautioned in a press release from the university.
The potential health effects are still unknown.
A new study published in the journal Proceedings of the National Academy of Sciences found that each bottle of water can contain hundreds of thousands of nanoplastics. “Previously, this was just a dark area, uncharted,” said the study’s co-author. “Toxicity studies were just guessing.” (iStock)
While previous studies provided broad estimates of nanoplastic amounts, this is the first study to identify the specific number of individual particles, the researchers noted.
They used a novel technique called stimulated Raman scattering microscopy, in which lasers stimulate the molecules of common plastics.
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“We developed a powerful optical SRS imaging technique for rapid analysis of nanoplastics with unprecedented sensitivity and specificity,” study co-author Beizhan Yan, an environmental chemist at Columbia University’s Lamont-Doherty Earth Observatory, told Fox News Digital.
“Previously, this was just a dark area, uncharted. Toxicity studies were just guessing what’s in there,” he added in the press release. “This opens a window where we can look into a world that was not exposed to us before.”
Three popular types of bottled water were analyzed in the study, but the researchers did not specify the brands.
Three popular types of bottled water were analyzed in the study, although the researchers did not specify the brands. (iStock)
“We found approximately one quarter of a million tiny plastic particles in one liter of water, 90% of which are nanoplastics,” Yan said.
“This number is about 10 to 100 times higher than previously estimated.”
Out of the seven types of plastic identified, the most prevalent was polyamide, a type of nylon.
Another was polyethylene terephthalate (PET), which is the material used to make the water bottles themselves.
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Other detected plastics included polystyrene, polyvinyl chloride and polymethyl methacrylate.
In future studies, Yan said he hopes to use a laser with higher power to increase the sensitivity and plans to identify additional types of plastic beyond these initial seven.
“Media reports about these particles in drinking water do nothing more than unnecessarily scare consumers.”
Celeste Meiffren-Swango, the Zero Waste program director at Environment America in Colorado, who was not involved in the study, told Fox News Digital that she believes “we have a public crisis on our hands — in our bodies and our water.”
She went on, “This new nanoplastics study reinforces that plastics have infiltrated just about everywhere. The proof is indisputable: For the sake of human and wildlife health, it’s time for our society to move beyond plastics.”
Of the seven types of plastic identified, the most prevalent was polyamide, a type of nylon. Another was polyethylene terephthalate, which is the material used to make the water bottles themselves. (iStock)
The Northeast Bottled Water Association (NEBWA) was not a participant in the research, but also reacted to the study findings in a statement to Fox News Digital.
“This new study by Columbia University … used bottled water to apparently demonstrate a new method for nanoplastics analysis due to a lack of currently available methods,” said a statement from Jason Hutzley, executive director of NEBWA.
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“This new method needs to be fully reviewed by the scientific community and more research needs to be done to develop standardized methods for measuring and quantifying nanoplastics in our environment.”
NEBWA noted that there is “a lack of standardized methods and no scientific consensus on the potential health impacts of nanoplastic and microplastic particles. Therefore, media reports about these particles in drinking water do nothing more than unnecessarily scare consumers.”
The Northeast Bottled Water Association (NEBWA) said there is “a lack of standardized methods and no scientific consensus on the potential health impacts of nanoplastic and microplastic particles.” (iStock)
The association’s statement also pointed out that microplastics and nanoplastics are found in thousands of food and beverage products packaged in plastic containers, not just water bottles.
“Moreover, and perhaps even more important, nanoplastic and microplastic particles are found in all aspects of our environment — soil, air and water,” the statement added.
When contacted for comment, the U.S. Food and Drug Administration (FDA), which is not involved with the Columbia study, said it is aware of the studies that have been conducted on microplastics in the food supply.
“While there is evidence that microplastics and nanoplastics are entering the food supply … there is a lack of evidence demonstrating that microplastics or nanoplastics occurrence in food poses a risk to human health.”
“This is an area where the FDA has not only been monitoring the research but also working to advance the science through analysis of testing methodologies and other related work, including participation in the United States Government Nanoplastic Community of Interest,” an FDA spokesperson told Fox News Digital.
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“There have been fewer studies on nanoplastics because there are not as many reliable methods to measure them,” the agency continued.
“This and other significant research gaps exist, but the FDA is not aware of scientific evidence that would support consumers being concerned about the potential level of microplastic or nanoplastic contamination in food, including bottled water.”
“We do not advise against drinking bottled water when necessary, as the risk of dehydration may outweigh the potential impacts of nanoplastics exposure,” the study researcher said. (iStock)
“While there is evidence that microplastics and nanoplastics are entering the food supply, primarily from environmental contamination, there is a lack of evidence demonstrating that microplastics or nanoplastics occurrence in food poses a risk to human health.”
Bottled water processors must comply with “robust regulations,” the FDA noted.
Study author Yan acknowledged that further research is necessary to determine whether drinking bottled water containing nanoplastics could lead to adverse health effects.
“If people are concerned about nanoplastics in bottled water, it’s reasonable to consider alternatives like tap water and reusable bottles,” the researcher said.
“However, it’s important to emphasize that staying hydrated is crucial for health,” he added.
“Therefore, we do not advise against drinking bottled water when necessary, as the risk of dehydration may outweigh the potential impacts of nanoplastics exposure.”
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Feeling lonely may take a toll on older adults’ memory — but it may not speed up cognitive decline, according to a new study.
Researchers from Colombia, Spain and Sweden analyzed data from more than 10,000 adults ages 65 to 94 across 12 European countries and found those who reported higher levels of loneliness did worse on memory tests at the start of the study, according to research published this month in the journal Aging & Mental Health.
Over a seven-year period, however, memory decline occurred at a similar rate regardless of how lonely participants felt.
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“The finding that loneliness significantly impacted memory, but not the speed of decline in memory over time was a surprising outcome,” lead author Dr. Luis Carlos Venegas-Sanabria of the School of Medicine and Health Sciences at the Universidad del Rosario said in a statement.
Loneliness may be linked to memory performance in older adults, a new study suggests. (iStock)
“It suggests that loneliness may play a more prominent role in the initial state of memory than in its progressive decline,” Venegas-Sanabria said, adding that the findings highlight the importance of addressing loneliness as a factor in cognitive performance.
The findings add to debate about whether loneliness contributes to dementia risk. While loneliness and social isolation are often considered risk factors for cognitive decline, research results have been mixed.
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The study looked at data from the long-running Survey of Health, Ageing and Retirement in Europe (SHARE), which tracked 10,217 older adults between 2012 and 2019. Participants were asked to recall words immediately and after a delay to measure memory performance.
Social isolation and loneliness could play a surprising role in cognitive health among seniors. (iStock)
Loneliness was assessed using three questions about how often participants felt isolated, left out or lacking companionship.
About 8% of participants reported high levels of loneliness at the outset. That group tended to be older, more likely to be female and more likely to have conditions such as depression.
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Researchers found that those with higher loneliness had lower scores on both immediate and delayed memory tests at baseline. Still, all groups — regardless of loneliness level — experienced similar declines in memory over time.
The results suggest loneliness may not directly accelerate the progression of memory loss, though it remains linked to poorer cognitive performance overall.
Researchers look at a brain scan at the National Institutes of Health in Bethesda, Maryland. (Saul Loeb/AFP/Getty Images)
Experts warn, however, that the findings should not be interpreted to mean loneliness is harmless.
“The finding that lonely older adults start with worse memory but don’t decline faster is actually the most interesting part of the paper, and I think it’s easy to misread,” said Jordan Weiss, Ph.D., a scientific advisor and aging expert at Assisted Living Magazine and a professor at NYU Grossman School of Medicine.
“It likely means loneliness does its damage earlier in life, well before people show up in a study like this at 65-plus,” Weiss told Fox News Digital.
By older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold, an aging expert says. (iStock)
He suggested that by older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold.
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“By the time you’re measuring someone in their late 60s, decades of social connection patterns are already baked in,” he said.
Weiss, who was not involved in the research, added that loneliness may coincide with other health conditions, and noted that participants who felt more isolated also had higher rates of depression, high-blood pressure and diabetes. The link, he said, may reflect a cluster of health risks rather than a direct cause.
“While they can go hand-in-hand, it’s not clear that loneliness contributes to dementia,” a psychotherapist says. (iStock)
Amy Morin, a Florida-based psychotherapist and author, said the findings reflect a broader pattern in research on loneliness and brain health, and that the relationship may be more complex than it appears.
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“The evidence shows there’s a link between loneliness and cognitive decline but there’s no direct evidence of a cause and effect relationship,” she said. “So while they can go hand-in-hand, it’s not clear that loneliness contributes to dementia.”
Morin added that loneliness, which can fluctuate, may not be the root of the problem, but rather a symptom of other underlying mental or physical health issues.
Researchers suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging. (iStock)
She said staying socially and mentally engaged is crucial for overall brain health.
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“It’s important to be proactive about social activities,” Morin said. “Joining a book club, having coffee with a friend, or attending faith-based services can be a powerful way to maintain connections in older age.”
The researchers also suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging.
Fox News Digital reached out to the researchers for comment.
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Research continues to uncover new details on how fasting may help extend life.
A new study published in the journal Nature Communications investigated how intermittent fasting can boost longevity in small worms often used in aging research.
Researchers from the University of Texas Southwestern Medical Center in Dallas compared worms that were fed normally to those that underwent a 24-hour fast in early adulthood and were then fed again, according to a press release.
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The scientists measured a variety of factors, including stored fat, gene activity related to fat metabolism and lifespan.
The results showed that the life-boosting benefit did not depend on the fasting itself but on the body’s behavior after eating again.
Experts say sustainability is key when choosing a long-term weight-loss strategy. (iStock)
Study lead Peter Douglas, associate professor of molecular biology and a member of the Hamon Center for Regenerative Science and Medicine at UT Southwestern, suggested that these discoveries “shift the focus toward a neglected side of the metabolic coin – the re-feeding phase.”
“Our data suggest that the health-promoting effects of intermittent fasting are not merely a product of the fast itself, but are dependent on how the metabolic machinery recalibrates during the subsequent transition back to a fed state,” he said.
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“Our findings bridge a gap between lipid metabolism and aging research,” he added. “By targeting aging, the single greatest risk factor for human disease, we move beyond treating isolated conditions toward a preventive model of medicine that enhances quality of life for all individuals.”
Lauri Wright, director of nutrition programs at the University of South Florida’s College of Public Health, called this a “high-quality” study that adds an “important nuance to how we think about fasting and longevity.”
Intermittent fasting typically involves limiting meals to an eight-hour daily window or fasting every other day. (iStock)
The benefits of the refeeding phase after fasting were “especially interesting,” Wright, who was not involved in the study, told Fox News Digital.
“The researchers showed that longevity was linked to the body’s ability to turn off fat breakdown after fasting, allowing cells to restore energy balance,” she reiterated.
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“From a scientific standpoint, that’s a meaningful shift because it suggests fasting is not just about burning fat, but about metabolic flexibility.”
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Fasting may support longevity through triggering metabolic switching, enhancing cellular repair and stress resistance and improving markers like insulin sensitivity, research shows.
Limitations and cautions
Although this study provides “important insight” on the power of refeeding, Wright noted that the findings should be approached with caution, as the study was done on worms and cannot always be translated to humans.
“Additionally, it explains how a process might work in a controlled lab condition rather than real-world eating behaviors,” she added as a limitation. “Finally, the study is short-term and doesn’t give us the long-term translation on lifespan outcomes.”
The review found intermittent fasting was barely more effective than doing nothing, according to the study authors. (iStock)
Wright cautioned that fasting is “not a magic solution for longevity, and how you eat overall matters more than when you eat.”
“I advise, first and foremost, to focus on diet quality, including a variety of fruits and vegetables, healthy fats and minimally processed foods,” she said.
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For those who are considering fasting, it’s better to stick with a moderate plan — like a 12- to 14-hour overnight fast — rather than going to extremes, Wright said. After fasting, she recommends focusing on well-balanced meals.
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Several groups of people should be cautioned against fasting, according to Wright, including those with diabetes who are on insulin or hypoglycemic medications, those who are pregnant or breastfeeding, anyone with a history of eating disorders and older adults at risk of malnutrition.
Anyone considering intermittent fasting should consult with a doctor before starting.
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